This square is very popular with machinists, toolmakers, and patternmakers. The sliding blades are adjustable making it practical for a wide variety of uses. The faces of the head are ground square, and the 6" (150mm) size has a level.
- Perfect small-size tools for checking or setting 90 degree angles
- 4" double square, accurate and adjustable
- Measuring tools have working surfaces ground to a demanding +/- .00001"
- All rules are marked with 1/64", 1/32", 1/16", and 1/8" graduations