Draw a Circle with a Fixed Point. _x000D__x000D_
Convenient For Hanging Plumb Line. _x000D__x000D_
1/4in Spaced Scribing Notches. _x000D__x000D_
T-Bevel Gauge. _x000D__x000D_
Depth Measurement._x000D__x000D_
Find The Centre. _x000D__x000D_
Aluminum triangular plate; surface oxidation treatment; laser marking and inlcuding aluminium Screw.