18% Grey Cards (8" x 10") Tire ruler Beam distance of 10 ft

Beam distance of 10 ft (3 m)

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

Pre-printed tough

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

18% Grey Cards (8" x 10") Tire ruler Beam distance of 10 ftPackage 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