18% Grey Cards (8" x 10") Tire ruler Tested to the lot requirements

Tested to the lot requirements of Military Specification Mil-A-46050C

allowing the device to be forensically sealed with evidence tags to avoid tampering

This locks the impression detail to avoid melting when the casting medium is applied

12" length supports many rolls of tape

18% Grey Cards (8" x 10") Tire ruler Tested to the lot requirementsPackage of 2 cards. These 18% Digital Gray Cards are spectrally neutral under all lighting conditions giving a true and accurate representation of the physical qualities of the light illuminating the card. They are made of a unique material that is resistant to moisture so they wont warp. This enables them to be washed with regular soap and water if they become soiled. The color permeates the material making the cards 2 sided. If the cards become