
Precision metal apertures in 10 micron steps to determine head size of .30 pellets - 0.008" thick 304 stainless gage, acrylic frame. Apertures from 7.58 to 7.67 mm, accurate to +/- 0.0025 mm
Precision metal apertures in 10 micron steps to determine head size of .30 pellets - 0.008" thick 304 stainless gage, acrylic frame. Apertures from 7.58 to 7.67 mm, accurate to +/- 0.0025 mm