Insize American Standard Thread Ring Gage 1/4–20UNC NOGO – Series 4121-1B1N Insize Long Handle Telescopic Gauge 19-32mm Range Series 4209-3 while the tool is supplied

while the tool is supplied with setting standards (except for the 0–25 mm range)

this vernier caliper provides clear readings and dependable accuracy for both professional and workshop environments

Outside Diameter: 55mm / 1

Cutting Diameter: 11/16″

sharp cutting edge that provides consistent

Insize American Standard Thread Ring Gage 1/4–20UNC NOGO – Series 4121-1B1N Insize Long Handle Telescopic Gauge 19-32mm Range Series 4209-3 while the tool is suppliedInsize American Standard Thread Ring Gage The Insize 4121 1B1N NOGO Thread Ring Gage is designed to check external inch threads with precision. Manufactured to ANSI ASME B1. 2 standards, Class 2A, and supplied with a manufacturer's inspection certificate, it ensures reliable, repeatable inspection results. Specifications : Part No: 4121 1B1N Standard: ANSI ASME B1. 2 Thread Size: 1 420UNC Thread Class: 2A Type: NOGO Ring Gage Material: Hardened tool