angular bevel gauge

Based on an idea from: http://www.wolfcraft.com/en/products/p/measuring/1_angular_bevel_gauge/s/p/index.html
additionally needed: 1 countersunk screw M5 40mm, 1 washer, 1 nut M5, 1 magnet diameter 15mm, height 8mm

(.Unfortunately I had no other magnet. If other variables are needed, write a comment, I am trying to upload a corresponding part.)