Perfect, clean corners every time. All you need is a gauge and a spare piece of board that is the same thickness as your cover board. An essential bit of kit for mitring corners. CNC cut from aluminium. Also available 3D printed, in Ivory ABS-M30

Instructions for use can be seen and downloaded here.

3D printed in Ivory ABS-M30
Measurement range:- 0.5 - 5.0mm board
Accuracy: ±0.10mm
Size: L-70mm x W-25mm x H-10mm