Is the ‘0’ flush with the edge of the set squares?

No, there is a central, marked zero and the values move left and right from that.

Why does this have arrows at 7°, 42° and 75°?

I have no idea what this means, but here is the answer you seek! (from wiki). 'Some variants have extra markings at angles of 7° and 42° (138° and 173°) in addition to the normal 45° and 90° markings to ease dimetric axonometry per ISO 5456-3'

What are the angles for the triangles?

45,45,90 equilateral triangle and a 60,30,90 set square

What angles are the 30cm and 20cm set square ?

Angles are measured in degrees not centimetres. The smallest angle is 30 degrees at the pointed end of the longer triangle.

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rOtring Professional Set Square, 32 cm

Product ID: 56317624

Details

Brand
rOtring
Colour
Clear
Graduation range
32 Centimetres
Material
Plastic
Style
Square

📏32 cm precision scale

🔵counter-directional numbering with color background

🛡️durable crystal clear plastic

£39.56

Duties & taxes included

In stock

Sold byAmazon UKDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📐 Elevate your drafting game with precision and style!

ERGONOMIC GRIP - Removable grip designed for comfortable, fatigue-free use during long drawing sessions.
INK RESISTANT EDGES - Indian ink edges and naps provide durability and prevent smudging for professional results.
ACCURATE ANGLE SCALES - 180°/1° angle scales guarantee pinpoint accuracy for all your technical drawings.
SMART NUMBERING SYSTEM - Counter-directional numbering with colored background for quick, error-free reading.
PRECISION MEETS CLARITY - Crystal clear plastic ensures flawless visibility for exact measurements every time.

The rOtring Professional Set Square (32 cm) combines Bauhaus-inspired minimalist design with advanced functionality. Crafted from durable crystal clear plastic, it features a removable ergonomic grip, counter-directional numbering with a colored background for easy reading, and Indian ink edges for lasting durability. Its precise 180°/1° angle scales make it an essential tool for professionals demanding accuracy and comfort in technical drawing.

Specifications

ASIN	B000WKL2OG
Best Sellers Rank	64,997 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 46 in Protractors & Set Squares
Brand	rOtring
Colour	Clear
Country Of Origin	Germany
Customer Reviews	4.6 4.6 out of 5 stars (355)
Global Trade Identification Number	03501170699270
Graduation Range	32 Centimetres
Item Dimensions L x W	9.5L x 5.9W centimetres
Item Type Name	Rotring Geometry Set
Item Weight	0.08 Kilograms
Manufacturer	Newell Rubbermaid
Manufacturer Part Number	S0699270
Material	Plastic
Model Number	S0699270
Number of Items	1
Number of Packs	1
Style Name	Square
Unit Count	1 count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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