JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M16 x 1.5 ER Collet Chucks this gauge withstands daily use

this gauge withstands daily use in inspection labs

and enduring wear resistance

The straight shank video-free design integrates smoothly into standard tool holders

this 20 mm countersink features a 90° hole-type geometry for consistent results across a range of materials

well-made tool that produces accurate holes with a clean finish

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M16 x 1.5 ER Collet Chucks this gauge withstands daily useThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. This Left Hand version supports M16 x 1. 5 threads with a 6H internal tolerance, making it ideal for engineers, machinists, and maintenance technicians who need reliable hole checks in a variety of applications. Its Go No Go design enables quick, objective verification of threaded holes, helping you confirm fit and consistency across assemblies. Built for