Square Gauge Ruler

Twig & Horn square gauge rulers are crafted using high-quality MDF board made with 100% recycled/recovered, FSC certified wood content. This eco-friendly option stands the test of time and holds up to plenty of use without warping or cupping.

Outside measurement: 18cmx18cm / 7"x7"
Inside opening measurement is of course 10cmx10cm / 4"x4"