The .25 Pelletgage offers meticulous assessment of pellet head sizes using precision metal apertures calibrated in 10-micron intervals. Crafted from 0.008" thick 304 stainless steel, the gage showcases durability, while the acrylic frame provides structural support. The apertures, ranging from 6.33 to 6.42 mm, maintain accuracy to within +/- 0.0025 mm, ensuring precise measurements.