JBO Thread Plug Gauge - UNC Go-No/Go - Right Hand - 3B - No. 12 x 24 ER Mini Collet Chucks Designed for standard-length reaming and

Designed for standard-length reaming and manufactured to BS 328/4

and reliable measurements over time

Gash tooth geometry to prevent flute chipping: Enhanced durability and reliability during extended milling runs

2 corner radius supports smoother inside corners and reduces the risk of chipping on delicate profiles

helping you quickly validate parts against exact specifications

JBO Thread Plug Gauge - UNC Go-No/Go - Right Hand - 3B - No. 12 x 24 ER Mini Collet Chucks Designed for standard-length reaming andThe JBO Thread Plug Gauge UNC Go No Go, Right Hand, 3B, No. 12 x 24 is a precision inspection tool designed to quickly verify the internal UNC threads in holes and bores. Its built for engineers, machinists, quality inspectors, and maintenance technicians who need reliable, repeatable checks to ensure threads meet Unified standards. With a straightforward go no go design and a right hand UNC configuration, this gauge delivers fast, unambiguous