Insize Optical Flat Ø45mm Flatness 0.1µm Series 4191-45B 43 x 50mm D.O.C HSS 3/4" Universal Shank Annular Cutter Includes heavy duty ABS plastic

Includes heavy duty ABS plastic top or bottom fixing hinges

Its optimized X and Y dimensions (1

Part No : 4129-12R

Insize is globally recognised for producing high-quality precision measuring instruments trusted by machinists

Insize Degree Square

Insize Optical Flat Ø45mm Flatness 0.1µm Series 4191-45B 43 x 50mm D.O.C HSS 3/4" Universal Shank Annular Cutter Includes heavy duty ABS plasticThe Insize 4191 45B Optical Flat is a precision inspection tool designed for checking surface flatness with extremely high accuracy. Manufactured for precision engineering, metrology, and calibration applications, this optical flat provides reliable flatness verification for precision surfaces, gauge blocks, measuring tools, and machine components. Featuring a single working face identified by an arrow marking, the optical flat allows accurate