The BB Gage is a precision tool designed to check BB diameters accurately. Great for the serious shooter, such as the target competitor, who uses high-quality precision BBs to achieve high performance and accuracy.
A: Take the BB and insert it into the smallest aperture, then continue to larger ones until it just goes through. The smallest one it goes into is its caliber.
A: The BB Gage is designed to measure all the BBs in the diameter of 4.35 mm to 4.44 mm.
A: No, it needs only periodic cleaning to function with high accuracy.

BBgage

$40.00

Specifications
Details
Aperture Size Range
4.35 mm to 4.44 mm
Increment Steps
10 microns
Material
0.008 inch thick 304 stainless steel
Frame
Acrylic plastic
Accuracy
±0.0025 mm
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