Arrow ruler, 4-inch (imperial) aluminum alloy center marking tool, 45/90 degree measuring ruler for finding the center point at a right angle.

Useful for measuring depth, space or verifying the tiny details, gauges like callipers are widely used in auto mechanics. Reading an angle, checking the squareness and the geometric data or measuring a tree's circumference: here are all the measuring tools you will need to complete those tasks and more!