This scratch compass / wing divider with built-in hatch marks allows you to precisely lay down marks along the edge. Handy little tool that fits nicely in hand and easy to adjust by tighten or loosen the screw. Deluxe compass is lockable with two adjustment wheels in addition to wider adjustment.

Deluxe:
Dimensions: 4" overall length, 30mm max opening
Material: 3Cr13 stainless steel, HRC 48-50

Standard:
Dimensions: 3.25" overall length, 20mm max opening
Material: stainless steel