Sirchie Reversible Scales (Set of 2) PPS600 & PPS601

These scales are designed primarily for footwear and tire track impression comparisons. They are excellent for verifying perspective distortion. The scales are printed on rigid vinyl plastic and feature exceptionally sharp division indicators. They also feature a glare-free finish for photographing in most lighting conditions (0.040" thick).

• For footwear and tire track impression comparisons
• 0.040'' thick
• Rigid vinyl plastic

To ensure the accuracy of their forensic scales, Sirchie inspects, measures, and verifies them using three standard rulers that are calibrated annually by Precision Measurements Corporation. Certificate of Calibration https://www.sirchie.com/media/resourcecenter/item/2/0/2019_standard_ruler_verification.pdf. This verification follows standards set forth by the National Institute of Standards and Technology. You can review the document Dimensional Review of Scales for Forensic Photography, https://www.nist.gov/publications/dimensional-review-scales-forensic-photography.