Measures both fired and resized cases quickly and easily saving valuable time having to measure each case with a caliper. Gage allows the reloader to quickly setup their trimmer to trim 11 of the most popular calibers reloaded for. Just place the bottom edge of the gage across the top edge of the cutter and the top edge of the gage across the bottom edge of the shellholder and start trimming. Constructed of anodized aluminum. Cartridges Measured: 6.5 Grendel, 6.8mm SPC, 223 Remington, 204 Ruger, 308 Winchester, 243 Winchester, 30-06 Springfield, 7mm Remington Magnum, 270 Winchester, 300 Winchester Magnum, 375 H&H Magnum.