does the compass lock in place?

Unfortunately neither compass in this kit lock in place.

what size lead does the compass use?

2mm diameter lead... 2mm in diameter - 16mm in length. The compass needs at least a millimeter of lead in the retainer part to be able to hold onto the lead, and that means that about 5mm of the lead is wasted.

Is this a suitable kit to substitute for an oxford geometry set?

Yes, it's very similar: Compact, comprehensive set includes metal compass with pencil holder, metal compass with lead, pencil sharpener, eraser, pencil, ruler, protractor, a set of squares, and one pack of leads. Packed in a reusable plastic storage box.Item PropertiesCategory: Drawing InstrumentsCategory: Ruling & Measuring ToolsBrand: Maped®Type: Drawing and Geometry Set

Maped Helix Usa M897010 10 Piece Geometry Study Set

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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NT$952

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Sold byAmazon TaiwanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📐 Elevate your geometry game with precision and style!

ERGONOMIC COMFORT - Compass head designed for fatigue-free, confident handling
DUAL SCALE ACCURACY - Inch & metric graduations for versatile measurement needs
TRAVEL READY REUSABLE - Shatter-proof case keeps your kit protected and organized on the go
PRECISION MEETS DURABILITY - Metal compasses resist bending for flawless circles every time
ALL IN ONE GEOMETRY POWERHOUSE - 10 essential tools including triangles, ruler, protractor, and more

The Maped Helix USA M897010 10-Piece Geometry Study Set is a professional-grade toolkit featuring two durable metal compasses capable of drawing circles up to 10 inches, precision triangles, ruler, and protractor with dual inch/metric scales. Ergonomically designed for comfort and housed in a reusable shatter-proof case, this set is ideal for advanced students and professionals seeking reliable, long-lasting geometry tools.

Specifications

ASIN	B003155XYO
Best Sellers Rank	#25,570 in Office Products ( See Top 100 in Office Products ) #57 in Drafting Compasses
Brand	Helix
Color	Clear
Customer Reviews	4.5 4.5 out of 5 stars (4,503)
Date First Available	1 January 2024
Item Weight	68 g
Manufacturer	Maped
Manufacturer Part Number	897010
Material Type	Metal/Plastic
Model number	897010
Number of Items	1
Product Dimensions	19 x 19 x 48.2 cm; 68.04 g
Size	Study Metal 10 Piece Kit

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