Field Scale Card
Field scale card, completely waterproof, features 10 cm scale, 4 inch scale and 30 mm scale for use when taking photographs in the field.
Field scale card featuring a 10 cm scale, 4 inch scale and a 30 mm scale printed in black and white blocks for ease of use and viewing on photos later. The entire card is encapsulated making it completely waterproof for use in field conditions. The card overall measures 15 x 5 cm.