As a professional tool, 90% of this angle finder is made from sturdy metal. The measuring arm is made from stainless steel and applies 2 strengthening lines. The thickness of this stainless steel is 2mm. The body part is made from aluminum.

DiAR 20  40cm  (20+20)

DiAR 30  60cm  (30+30)

DiAR 50  100cm (50+50)

This is a 2 in 1 folding rule with a big difference, having a digital readout of the angles.

Measure both the angle and length at the same time with a clear display and bold markings in both metric and imperial on the rules.
The rules are made from corrosion resistant stainless steel.
A serious tool for any carpentry or setting out tasks.
The Li-on battery lasts more than 2.000 hours in continuous use.

Versatile 3 in 1 measuring tool, angle finder and Waterproof Protractor (IP67). 

A very handy digital protractor, ideal for steel work due to its strong alloy body and built in base magnets. 

With simple calibration and a display that always reads the right way up, it's easy to use and read. 

It has a hold facility so that you can use it where you cannot read the display.
A "V" groove in each side makes it suitable for use on tubular work, so it would be great for setting up guard rails on stairs etc. 

Provides digital readings with a resolution of +-0.05°. 

Li-on battery lasts more than 100 hours.

It is packaged in a blister with a carrying case.