Description:Narrow side only width 7mm and 11mm, more convenient for narrow measuring; machinist precision edge square ruler, 90° right angle ruler engineer measuring tool.
Specification:Material: Hardened Steel(45 steel)
Overall Size: 63x40mm, 80x50mm, 125x80mm
Narrow side: 7mm, 7mm, 11mm
Edge angle: 30°
Use For: Measuring right angle, designed for precision layout and measurement work.
Features:1. For checking the squareness of an edge, using the light-gap method. The blade is bevelled on both sides.
2. Narrow side only width 7mm and 11mm, more convenient for narrow measuring; it isupplied in a protective case.
3. Beams and blades are ground and lapped for parallelism.
5. 30° edge, beams and blades are ground and lapped.
Package Included:1 x Edge Square Ruler
More Details: 
