
Precision metal apertures in 10 micron steps to determine head size of .22 pellets - 0.008" thick 304 stainless gage, acrylic frame. Apertures from 5.48 to 5.57 mm, accurate to +/- 0.0025 mm
Precision metal apertures in 10 micron steps to determine head size of .22 pellets - 0.008" thick 304 stainless gage, acrylic frame. Apertures from 5.48 to 5.57 mm, accurate to +/- 0.0025 mm