How do you measure the diameter of Airsoft BBs?

Measuring the diameter of the airsoft BBs calls for the use of professional gear and gadget. Here are some feasible techniques:
Use a vernier caliper or ruler for size. Place the BB gun on a flat surface, ensuring that the muzzle is parallel to the horizontal line. Use a vernier caliper or ruler to degree the diameter of the BB gun and report the information.
Use a laser caliper for measurement. Laser caliper is a high-precision measuring tool which could quickly and accurately measure the diameter of the BB gun. Align the laser caliper with the muzzle of the BB gun, study the information, and record it.
It should be stated that after measuring the diameter of the BB gun, care should be taken to keep away from harm to the gun or immoderate size mistakes. Therefore, it is endorsed to use expert gear and system for measurement.