Starrett 696Z Crankshaft Distortion & Strain Gauge: 2 3 8 in to 18 in, Inch G916484458 Hard Brinnell 300 Rockwell C31 7 16 in Hard Brinnell 300 Rockwell C31 7 16 in Hard Materials up to Brinnell 455 Rockwell C48 5 16 in Cutting Capacity Soft Steel 7 16 in Features Hardened Alloy Steel Jaws are Designed and Manufactured to Assure the Longest Possible Blade Life Safety Training and Reference Material Title Hearing Conservation & Safety Provides Training Information Language Spanish Safety Training and Reference Materials Item DVD For Use With Computer or DVD Player Regulations Covered OSHA 29 CFR 1910 375 to 18 in Features Designed in collaboration with Hartford Steam Boiler It will allow you to make precise measurements in your work