Where can I get replacement lead?

Mr. Pen- Compass Lead, 100pcs Leads, 2mm Lead, Refills Compass for Geometry, Lead for Drawing Circle, Replacement Leads in Refill Tube, Math Compass Lead, Drafting Lead, Break Resistant Lead, Graphite https://www.amazon.com/dp/B07MJTYGFY/ref=cm_sw_r_cp_api_glt_fabc_D2GJ2V8Q0T6V9GWGFX44 These seem to fit the compass.

Is there a pocket that holds rulers and protractor secure in lid so they don't fall out or have to be moved out of the way every time case is opened?

Your question indicates that you think the pieces are stored in the lid. They are not. They fit into the case but if you have the kit open and turn upside down, some may fall out. To remove the compass, you may need to move the protractor out of the case in order to remove the compass. It’s a very nice kit, but I keep a rubber band around the outside of the case to be sure it doesn’t pop open and the contents spill out.

What is the unit of measurement? For example, some pictures show the rulers with both cm and inch measurements, while others show only cm measurements

Unjoo's geometry set has been upgraded，The measuring units of ruler inch and cm

How wide of a circle can you create with the Compass?

If I remember correctly I think 12in diameter. .

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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（Black）

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（Black）

Product ID: 415666144

Details

Brand
Unjoo
Specific uses for product
Graphite
Colour
Black
Power source
Hand Powered
Material
Metal Plastic

📏10-piece precision set

⚙️ergonomic metal compasses

🛡️shatterproof storage case

MX$648

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Description

📐 Master your angles, own your space.

UNIVERSAL HOLDER COMPASS - Compatible with any standard pencil or pen—versatility meets convenience.
SHATTERPROOF COMPACT CASE - Protects your tools on-the-go and keeps your workspace impeccably organized.
COMPLETE 10 PIECE GEOMETRY ARSENAL - Everything you need for flawless drafting and drawing in one sleek kit.
IDEAL FOR STUDENTS PROFESSIONALS ALIKE - Perfect for math whizzes, architects, designers, and anyone who values precision.
DURABLE METAL COMPASSES WITH ERGONOMIC GRIP - Engineered for precision and comfort, built to last through every project.

The Unjoo Math Geometry Kit is a professional-grade 10-piece set featuring metal compasses with ergonomic heads, a 6-inch ruler, protractor, triangles, and essential accessories all housed in a durable, shatterproof case. Designed for students, teachers, and professionals, it offers precision, portability, and long-lasting quality to elevate every drafting and drawing task.

Specifications

ASIN	B09BFW1JFS
Additional Features	Ergonomic
Best Sellers Rank	#90,140 in Office Products ( See Top 100 in Office Products )
Brand	Unjoo
Brand Name	Unjoo
Color	Black
Colour	Black
Customer Reviews	4.6 out of 5 stars 1,987 Reviews
Item Weight	0.1 Kilograms
Manufacturer	Unjoo
Manufacturer Part Number	GMS0000127
Material	Metal, Plastic
Material Type	Metal, Plastic
Model Number	GMS0000127
Number of Items	1
Power Source	Hand Powered
Power source	Hand Powered
Specific Uses For Product	Graphite Pencil
Specific uses for product	Graphite Pencil
Target Audience	Student
Target audience	Student
UPC	738632044528

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MX$648

Duties & taxes included

In stock

Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mexico.

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