The L.E Wilson Case Length Gauge is a one-piece, non-adjustable cylinder-type gauge, milled on one end for checking min and max length of straight-walled rifle and pistol cases (having no shoulder).
This gauge is precision engineered and is of exceptional quality.
The L.E Wilson Case Length Gauge measures the case length (min/max), a critical dimension for all straight walled cartridge cases (i.e. those without a shoulder)
This Case Length Gauge does NOT measure body diameters. For that, see the Pistol Max Gauge or Min Dimension Gauge.
For best results, set the cartridge case on a flat surface, slide the gauge over the top of the case (milled grooves up). Then run a straight edge over the top of the gauge to detect excessive length that may prevent proper chambering.