Industrial Gagemaker 4-1/2" BPN Pin Standard Rod is a precision reference rod used to calibrate and verify pin gauges in metrology and inspection settings. The rod measures 4-1/2 inches in length, providing a stable standard for length checks and comparison against compatible gage pins. Built under the Gagemaker brand, this pin standard rod serves as a dependable, repeatable reference for shop floors and laboratories performing gage calibration and inspection routines.
