Johnson™ 406EM - Combination Square
- Steel blade with permanently stamped graduations 1/8", 1/16", 1/32" mm
- Heavy-duty cast zinc head with black, chip-resistant e-coating finish
- CNC machined square head for greater accuracy
- Reversible head with lock bolt and steel screw, hardened, screw-in scriber won't fall out
- Durable acrylic level vial