13 best compass for geometry
A compass for geometry is a fundamental drafting tool used in technical drawing, geometry, and other mathematical and engineering disciplines. It falls under the category of technical drawing supplies and is considered an essential tool in various educational and professional settings. Here's what you should know about compasses for geometry:
Basic Function: A geometry compass is a precision instrument used for drawing accurate circles and arcs on paper or other surfaces. It consists of two arms, one with a pointed end (the "needle" or "nib") and the other with a clamp or adjustment mechanism. By adjusting the distance between the needle and the clamp, you can draw circles of different sizes.
Construction: Geometry compasses are typically made of high-quality materials such as stainless steel, brass, or aluminum. The arms are hinged at one end and have a mechanism that allows you to secure the arms at a specific radius.
Compass Types: There are various types of geometry compasses available, including traditional compasses with a needle point, beam compasses for larger circles, and bow compasses that are easier to use for precision work.
Divider Function: Many geometry compasses have a divider function, which means they can also be used for measuring and transferring distances accurately. This makes them versatile tools for technical drawing and drafting.
Adjustability: The ability to adjust the radius of the circle precisely is a crucial feature of geometry compasses. This adjustment is typically done by loosening or tightening the clamp on one of the arms and then locking it in place once the desired radius is set.
Lead or Pencil Attachment: Some compasses come with attachments for holding leads or pencils, allowing you to draw circles and arcs in pencil or other writing utensils. This can be particularly useful for drafting and drawing tasks.
Compass Sets: Geometry compasses are often sold as part of a compass set, which may include other drawing instruments like protractors, rulers, and triangles. These sets are commonly used in educational and professional settings.
Application: Geometry compasses are used in various fields, including mathematics, engineering, architecture, and art. They are essential for creating accurate diagrams, technical drawings, geometric constructions, and mathematical illustrations.
Care and Maintenance: To ensure the longevity of your geometry compass, it's important to keep it clean and free from dust and debris. Lubricating the hinge and pivot points as needed can also help maintain smooth and precise operation.
In summary, a compass for geometry is a versatile and essential tool in technical drawing, mathematics, and engineering. It allows for the precise drawing of circles and arcs, making it a valuable instrument in both educational and professional settings.These compasses come in various types and materials, and they are often included in comprehensive geometry sets alongside other drafting tools.
Below you can find our editor's choice of the best compass for geometry on the market
Westcott Metal Ball Bearing Compass with Pencil, Nickel Plated
Westcott
- All nickel metal plated
- Easy grip top control
- Adjusts to draw circles up to 13" diameter
- Includes pencil
User questions & answers
| Question: | can it lock in place |
| Answer: | Yes, you can lock it in place. |
| Question: | Will it fit a standard Bic pen |
| Answer: | Yes, a standard Bic pen will fit this Compass. |
| Question: | how do you adjust it to go past 6 inches. I need a 8.5 " circle |
| Answer: | Westcott Metal Ball Bearing Compass with Pencil draws circles up to 13" diameter. To draw a 8.5" circle adjust the settings to 4.25 |
Mr. Pen- Professional Compass for Geometry, Extra Lead, Metal Compass, Compass, Compass Drawing Tool, Drawing Compass, Drafting Compass, Compass for Students, Compass for Woodworking, Compass Geometry
- 1 High Quality Professional Bow Compass For Math, Geometry, Art, Drafting And Drawing; Creates Circles Up To 8 Inches In Diameter
- Precision Geometry Compass With Spring Bow Head And Center Wheel Prevents Unintentional Leg Movements
- All Metal, Nickel Plating Compass, Lifelong Satisfaction Guaranteed
- Easy To Adjust Legs, Great For Precise Drawings
- Packaged In A Clear, Reusable Pouch. Easy To Carry And Store
User questions & answers
| Question: | Does this compass stay tight at the wheel when using? My Staedtler Compass moves every turn and is not consistent |
| Answer: | Yes. It’s a great tool! I’ve had same frustration with others. Enjoy construction activities with this compass! |
| Question: | How do we keep the lead sharp - does it come with a sharpener |
| Answer: | There is no sharpener but it comes with many many new tips even a couple extra metal ones. i did read you can request new tips any time for free. |
| Question: | What type of lead is included...2h, hb, or 2b |
| Answer: | Not sure, and the label that might have told is now gone, but it is not hard, and it's quite wide. |
| Question: | How small is the smallest drawable circle |
| Answer: | I just drew a circle in the all-the-way closed position. It was 5/8". |
Mr. Pen Geometry Set with 6 Inch Swing Arm Protractor, Divider, Set Squares, Ruler, Compasses and Protractor, 15 Piece Set
- Geometry Set For All Levels Designed in USA
- Package Includes 15 Piece: 2 Metal Compasses (1 Study Compass & 1 Graphic Compass), 1 Extra Lead for Graphic Compass, 1 Metal Divider, 2 Pencils for Compass, 1 Mechanical Pencil (0.5 mm) for Compass, 1 Pack of 0.5 mm Lead for Mechanical Pencil, 1 Eraser, 1 Metal Pencil Sharpener, 1 Ruler (6”), 1 Set Square (30°/60°), 1 Set Square (45°), 1 Protractor, 1 Protractor with Swing Arm (6”)
- 15 Piece Geometry Set, Compass Set in a Reusable Pouch, Easy to Carry and Store
- Inch and Centimeter Measurements
- The Math Set/Geometry Set Designed by Experienced Math Experts with All Essential Items for Teachers and Students at Any Level
User questions & answers
| Question: | does the divider have a screw adjustment |
| Answer: | The metal compasses do. The 6" plastic protractor with swing arm doesn't. |
| Question: | What size lead does the compass use |
| Answer: | The size of the compass lead is 2mm in diameter, and 1 cm in length. There is another compass in the set that you can use with almost any pen or pencils. the set comes with 2 #2 pencils. |
| Question: | How big of a circle can I draw |
| Answer: | Hi, Thanks for your question. There are two compasses in the set. One has its own lead and it opens up to 6.5" meaning 13" circle in diameter. The other one you can use with pencils, pens, markers,... and it opens up to 5.25" i.e. 10.5" circles. |
| Question: | How do I use the divider |
| Answer: | Usually dividers are used to transfer measurements without leaving a mark. Also you can use them to mark measurements on paper, wood and...So you measure something with your divider then you can transfer it to other things, multiple times, without measuring again and again or leaving a mark with pencils or pens. |
Product features
Mr. Pen Story: Committed to Quality and Service
What's Included:
How to use:
- Open the compass to the radius desired for your circle.
- Place the compass point on a piece of paper where you would like the center point of the ring.
- Place the position of the pencil/lead on the paper.
- Rotate the compass to mark a circle on the paper with a pencil. Draw without lifting the point of the compass of the paper.
Offidea Professional Woodworking Compass with Wing and Pencil Holder, 8 Inch - Ideal Large Compass for Geometry, Drawing, Drafting - Perfect Pencil Compass for Carpenter
- WING DIVIDER WITH PENCIL HOLDER - Made from thick high-quality carbon steel and with a sizable length of 8 inches. Built for demanding projects.
- EASY TO DRAW AND ADJUST - Lockable heavy-duty drawing compass for repeat measurements or drawing circles and arches, it won’t skip or slide out of your control.
- MAKES STRONG ENGRAVINGS - Carpenter's scribe makes circles between 1/2" and 22" diameter for most of the materials.
- IDEAL DRAFTING COMPASS FOR WORKSHOP - Use as a professional carpenters compass for woodworking, carpentry, metalworking or leatherwork.
- 100% SATISFACTION OR YOUR MONEY BACK - That’s our unconditional guarantee! If you’re not 100% satisfied with your purchase, we promise to offer you a prompt and full refund or ship you a replacement, so you can buy with peace of mind.
User questions & answers
| Question: | How could something 8 inchs create a 22 inch circle? If both sides are 8 inches, that would be 16 inches total |
| Answer: | If you could open it all the way (i.e. flat, which you can’t), but if so, that would be the radius. And so the circle diameter would then be 2x16, or 32inches. So then it is reasonable that one could make a 22 inch circle. I have not tried it to verify though |
| Question: | Hi, i'd like to know if anyone has used this as a scribing tool? i used to own the fast cap accuscribe and i'm looking for something more durable |
| Answer: | The tube the pencil sits within is narrow, so thicker markers will not fit. I want to try a "grease pencil" that are available, as a #2 pencil wont stand up to scribing most of the surfaces I intend to use this with. |
| Question: | Does anyone have a recommendation for a mechanical pencil that fits this compass? Ideally |
| Answer: | I tried every .5mm pencil I have, but they all are too large to fit in the compass sleeve. Then I remembered I had some PaperMate Sharpwriter, which is a disposable 0.7mm pencil sold by Amazon. It fits perfectly! Here is the Amazon link: https://smile.amazon.com/Paper-Mate-SharpWriter-Mechanical-Pencils/dp/B06ZZHHY68/ref=sr_1_2?crid=2CPJ59REBLKWG&keywords=papermate+sharpwriter+2+mechanical+pencils&qid=1580257098&sprefix=papermate+sharp%2Caps%2C217&sr=8-2 I hope this helps! I'm glad you asked the question, as I have now put the Sharpwriter pencil in the compass to replace the wooden pencil that's always dull! I wish it were the finer 0.5 lead, but it still is far better than a dull wooden pencil. David |
| Question: | Will this hold a pen or marker approx. 3/8in/5mm in diameter |
| Answer: | The retainer ring will only hold a pencil or pen of same size. 3/8" will not work without a different ring! |
Product features
OFFIDEA 8 INCH WOODWORKING COMPASS - BUILT LIKE A TANK
Made from thick high-quality carbon steel and with a sizable length of 8 inches. Built for demanding projects.
Lockable wing for repeat measurements or drawing circles and arches, it won't skip or slide out of your control.
IDEAL FOR:
- Woodworking
- Metalworking
- Leatherworking
- Drawing or scribing
- Use as a divider when measuring diameters
WING DIVIDER WITH PENCIL HOLDER
Made from high-quality carbon steel for professional use. Finely ground point doesn't slip accidentally. Sturdy rivet joint structure prevents legs to move during use.
EASY TO DRAW AND ADJUST
Easy to use and reliable locking mechanism for repeat measurements or scribing precise circles and arch.
Mr. Pen- Compass and Protractor Set, Geometry Kit, Compass Protractor Set, Protractor, Compass for Geometry, Math Compass, Compass School, Math Compass And Protractor, Geometry Tools Set, Geometry Set
Mr. Pen
Product description
- Mr. Pen package includes one durable protector and one compass. Highly functional and easy to use with green color
- High quality compass for math, geometry, art, drafting and drawing, creates circles up to 12 inches in diameter
- Compass works with pencils, pens and thin markers
- Protractor made with transparent clear plastic. Size: 6 x 3 x 1/8 inch
- Accurate and long-lasting set
- Mr. Pen package includes one durable protector and one compass. Highly functional and easy to use with green color
- High quality compass for math, geometry, art, drafting and drawing, creates circles up to 12 inches in diameter
- Compass works with pencils, pens and thin markers
- Protractor made with transparent clear plastic. Size: 6 x 3 x 1/8 inch
- Accurate and long-lasting set
Mr. Pen- Professional Large Compass for Woodworking, 12 Inch Compass with Wing, Compass for Geometry, Compass Drawing Tool, Woodworking Compass, Pencil Compass for Carpenter, Drafting, Drawing Compass
- Professional All Metal Compass/Divider For Woodwork, Carpentry, Metal Work, Leather Work, Math, Etc.
- The Compass Leg Measure 12 Inch And Can Draw Circles Upto 30 Inch (76 cm) in Diameter
- Designed With A Pencil Holder To Easily Change The Pencil For Sharpening Purposes (Pencil Is Not Included)
- Can Be Used As A Scribe Or Divider To Quickly Measure lengths And Copy Measurements
- Lockable Sliding Nut Design Allows For Quick Leg Adjustment And Repeatable Measurements
User questions & answers
| Question: | how do I make a 39 inch circle |
| Answer: | You need something like a yardstick compass, which are point and pencil adapters that slide onto a standard yardstick. https://smile.amazon.com/Alumicolor-Compass-Drawing-Cutting-Circles/dp/B007RFPVSC/ https://smile.amazon.com/70036-Yardstick-Compass-Lead-Pin-Post/dp/B00BB58ADW/ |
| Question: | Great Compass , but we’re missing the two set screws |
| Answer: | The carpenter's 12" compass I received lacked the locking and pencil retention screws necessary for its use. I e-mailed the Mr. Pen folks to request the screws early that evening. They responded via e-mail around three the next morning apologizing for the problem and stating that if I'd send them my Amazon order number they would be happy to send me a new compass. I did so and received notification that my order had shipped that same day. Two days later I received my new compass. No hassle and prompt, cheerful customer service make this a great outfit to do business with. And yes, the product was of great quality. |
Mr. Pen- Professional Compass for Woodworking, 8 Inch Compass with Wing, Large Compass for Geometry, Compass Drawing Tool, Woodworking Compass, Pencil Compass for Carpenter, Drafting, Drawing Compass
- Professional All Metal Compass/Divider For Woodwork, Carpentry, Metal Work, Leather Work, Math, etc. - Leg Length: 8 Inches
- Pencil Holder To Easily Draw Circles Up To 18” In Diameter
- Can Be Used As A Scribe Or Divider To Quickly Measure And Copy Measurements
- Draws Arcs And Circles Repetitively With High Dimensional Accuracy With The Lockable Wing Design
- Made From High Quality Steel, It Will Not Rust Or Get Corroded
Unjoo Drawing 9Pc Geometry Set Aluminum Compass, Geometry Precision Tool for Student, Circle Drawing Tool and Architecture, Drafting Kits for Engineer
- Package includes: 1 shatterproof plastic box; 3 graphic compass; 4 Conversion head; 1 pencil refill; Robust plastic case for protecting and storing tools in one place in a backpack or desk.
- High quality: The professional compasses are made by aluminum and stainless steel. Durable and easy carry.
- Extension Beam Design: An Extension Beam attaches to the big Compass for drawing large circles. You can draw larger circle without lots of measuring and connect dots. Interchangeable attachments, a slip handle for pens, pencils, stylus or markers
- Wide use: The drafting set is a fantastic assistant for those working in machine design, Geometry compass set is suitable for architects, engineers, draftsmen, builders, roofers, teachers and students, This tool is perfect for DIY handymen and artists for a variety of geometry tasks
- Guarantee: Buy Now, Limited sale offer, You Are Backed by our 365 Days Money Back Guarante
Offizeus Professional Compass for Geometry with Extra Lead Refills - Makes 10 Inch Circle - Math Compass, Drawing Compass - Metal Precision Bow Compass with Lock - for Drafting, School, Woodworking
- PLEASURE TO USE STURDY SPRING BOW COMPASS - Adjustment wheel with automatic locking mechanism makes drawing easy and fun, you never want to return to plastic compass again!
- WITH PLENTY OF SPARE PARTS - OFFIZEUS compass comes with 9 spare leads, extra steel needle tip and spare holding screws and nuts.
- PERFECT FOR KIDS AND ADULTS - Excellent for use in school, woodworking, or at home. The best circle drawing tool for student, artist, mathematician, carpenter.
- CARRY POUCH - Everything packaged nicely in reusable clear pouch for easy to carry and store.
- 100% SATISFACTION OR YOUR MONEY BACK - That’s our unconditional guarantee! If you’re not 100% satisfied with your purchase, we promise to offer you a prompt and full refund or ship you a replacement, so you can buy with peace of mind.
User questions & answers
| Question: | The lead is actually graphite, correct |
| Answer: | It seems to be graphite - I don't have equipment to test its composition, so can't say definitively. |
| Question: | Where is it made |
| Answer: | China. |
| Question: | How small of a diameter can it produce |
| Answer: | Hi, Thanks for asking. You can draw about 0.4 inch (1 cm) diameter circle. |
| Question: | how wide a diameter circle |
| Answer: | The diameter of the circle you can draw is 9 to 10 inches depending how you have set up the lead / needle tips and how worn out the lead tip is. Thanks for asking! |
Product features
PRECISION BOW COMPASS - ALL METAL DESIGN
OFFIZEUS precision bow compass / divider includes easy-to-use adjustment wheel and locking mechanism preventing leg movement during drawing. By adjusting center wheel you can easily change the radius of the circle.
When the desired radius is achieved, the mechanism is automatically locked to adjusted position. Compass is equipped with 2mm diameter lead refill tips and needle and they are easily replaceable. They are attached to compass with thumb screws, no tools are required.
PLEASURE TO USE
- Adjustment wheel with automatic locking mechanism makes drawing easy and fun.
IDEAL TOOL FOR:
- Students, Teachers, Carpenters, Woodworkers, Metalworkers, Engineers, Architects, Mathematicians, Artists, Craftsmen, Designers.
PACKAGE INCLUDES
- Precision bow compass
- 10 lead tips packed in 3 plastic tubes
- 2 needle tips
- 2 spare screws and nuts
- Clear reusable pouch
Unjoo Math Geometry Kit Sets 10 Piece Student Supplies with Shatterproof Storage Box,Includes Rulers,Protractor,Compass,Eraser,Pencil Sharpener,Lead Refills,Pencil,for Drafting and Drawings（Green）
- ❤10 Piece Geometry Kit Set includes: 2 Green Metal Study Compasses, 2 Triangles (45° & 30°/60°), 6" Ruler, 4" Protractor, Pencil for Compass, Pencil Sharpener, Eraser, Pencil Lead Refill
- ❤A Practical Compass Geometry Set:Durable metal compasses will not bend or flex during use, Ergonomically designed compass head is comfortable to hold, Universal Holder Compass work with any standard sized pencil or pen, Rulers, Triangles & Protractor feature a graduations for easy identification along. With a Durable Storage Box, Easy to carry and store.
- ❤A Practical Tools for tipurpose:This tool set were perfect for students, teachers, math experts, architects, engineers, artists, designers at any level.A good Geometry Set for teachers and students.Can be used in school,office,home or out work.
- ❤A Good Choice for Teachers and Students:It's also a perfect gift for your family and friends,easy to take to class and to store in the classroom and at home. Just choose it as school season gift or Christmas gift.
- ❤100% Customer Satisfied Service: Buy Now Risk-Free, LIMITED SALE OFFER, You Are Backed by our 365 Days Money Back Guarantee!
User questions & answers
| Question: | Can it hold a micron pen |
| Answer: | Yesss!!! There are two compasses in the set. One has its own lead, The other one you can use with pencils, pens, markers..., The set provides a variety of good straight edges, triangles, angles, and both compasses are very handy. |
| Question: | Does this compass stay true when you set the radius ? I am so tired of circles changing size and shape as I’m drawing them |
| Answer: | The compass has a set of holes that you slip the pen/pencil into, then tighten a screw to make it snug. |
| Question: | Is the red really pink as it appears in the pictures |
| Answer: | It’s hot pink like a highlighter. |
| Question: | Will the material be very flimsy? Is there any peculiar smell |
| Answer: | I think it's great, won`t be very flimsy.There is no special smell and quite flexible. |
Product features
Starter maths set for school, ready for exams and college course
Why choose Unjoo compass set:
1.Ideal gift for school students
2.Geometry drawing tools kit for students of different grades at school
3.Easy to take to class and to store in the classroom and at home
Starter maths set for school, ready for exams and college course
Why choose Unjoo compass set:
1.Ideal gift for school students
2.Geometry drawing tools kit for students of different grades at school
3.Easy to take to class and to store in the classroom and at home
Starter maths set for school, ready for exams and college course
Why choose Unjoo compass set:
1.Ideal gift for school students
2.Geometry drawing tools kit for students of different grades at school
3.Easy to take to class and to store in the classroom and at home
Starter maths set for school, ready for exams and college course
Why choose Unjoo compass set:
1.Ideal gift for school students
2.Geometry drawing tools kit for students of different grades at school
3.Easy to take to class and to store in the classroom and at home
Compass for Geometry Large, Professional Drawing Compass Metal Drafting Compass Kit with Extension Bar,Metal Compass Geometry Set for Geometry, Drafting, Math, Drawing, for Engineer and Students…
- High-quality Compass Math Set: It's a metal compass.Our geometric compass is equipped with an adjusting wheel and an extension beam with an automatic locking mechanism, allowing you to accurately set and hold the desired circle size.
- Professional Drafting Compass Tools:With Universal Adapter and Extension Beam For Math, Geometry, Art, Drafting And Drawing.By turning the middle of the screw to adjust the opening and closing compass. You can accurately set the size of the circle you need and hold it.
- Ideal for Student Math Classes :Excellent for use in school or at home. The best circle drawing tool for student, artist, mathematician, carpenter.It's a great deal choice for math classes.
- Easy to Install and Use:Everything packaged nicely in reusable clear case to protect and keep tools in one place in a backpack or desk.
- Drawing Compass with Extension Beam:The Extension Beam for drawing large circles(approciate 20 inch diameter), great for those need to big circle. Also includes a small pen that can be used in the slip handle or separately.
User questions & answers
| Question: | Is it possible to get replacement screws and wheel shaped adjustment nuts to this set |
| Answer: | For the specific installation method of our compass set, please refer to the details page, and we will release more detailed video tutorials in the future. Thank you for your comments, which will help us better upgrade the product. |
Product features
Math for students
Drawing circle
Geometry for Engineer
Mr. Pen Professional Metal Compass with Wheel and Lock for Geometry, Drafting, Math, Drawing
- Professional Compass With Universal Adapter, Extension Beam For Math, Geometry, Art, Drafting And Drawing, Creates Circles Up To 18 Inches In Diameter
- Precision Geometry Compass With Spring Bow Head And Center Wheel Accompanied Quick Setting Adjustment With Push Button Mechanism Prevents Unintentional Leg Movements
- Packaged In A Clear, Reusable Pouch. Easy To Carry And Store
- 10 Extra Lead, Spare Needle And Screws And Screw Driver
- Please find instruction video in the picture section of listing
User questions & answers
| Question: | Are the blue parts made of plastic? I can't tell in the picture, especially the top |
| Answer: | Yes made of plastic,and I don't use mine for anything other than drawing mandalas and it does the job OK. |
| Question: | Can this draw an ellipse |
| Answer: | Probably not as Mr. Pen is designed to draw circles. |
| Question: | How long is this product |
| Answer: | From tip to point it is 6 5/8 inches. |
| Question: | What is the maximum diameter? The description says 18" while the video says |
| Answer: | With the "extender leg" attached I am able to open the compass to a diameter of 11.5". I don't see how you could expand it to 18" or 24". |
Wenko.Lam-Professional Compass for Geometry, with Wooden Pencil, Makes 13 Inch Circle, Compass, Math Compass, Drawing Compass, Geometry Compass, Compasses for Drafting, Metal, School, Study (Blue)
Product description
Wenko precision durable fashion compass. Easy to handle and works smoothly for its excellent workmanship.
✔ Compass is made of durable metal for years of use!
✔ Ergonomically designed for the utmost comfort.
✔ Sets come with a transparent shatterproof case, convenient to organize, carry, and safe keeping.
HOW TO USE
✔ Open the compass to the radius desired for your circle.
✔ Place the compass point on a piece of paper where you would like the center point of the ring.
✔ Place the position of the pencil/ pens, crayons and skinny markers on the paper.
✔ Rotate the compass to mark a circle on the paper.
IDEAL TOOL FOR
✔ Perfect for students of all ages , Teachers, Engineers, Architects, Mathematicians, Artists, Designers.
PACKAGE INCLUDES
✔ Precision durable fashion compass
✔ 1 pencil
✔ Clear reusable pouch
- ♛ Includes 1 high quality professional metal compass.
- ♛ Antiskid grip top control.
- ♛ Accurate circles up to 13" in diameter -Ideal For Math, Geometry, Art, Drafting And Drawing.
- ♛ Universal holder works with pencils, pens, crayons and skinny markers.
- ♛ Packaged In a Clear, reusable pouch, easy to carry and store.
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