The EFR400E smaller version of our folding scales is perfect when photographing evidence such as bullet casings, fingerprints, bone and glass fragments. Its rugged, black anodized aluminum construction allows it to be used indoors or out regardless of the weather. This metal construction will withstand many years of consistent use. Because the scales and angular measurements are precision laser-engraved on a metal structure,they are long-lasting and can easily become a permanent addition to your forensic tools.The EFR400E English scale measures 13.5″ when fully extended and readily folds down to amere 5.25″ for convenient transportation and storage.
To ensure the accuracy of our forensic scales, Sirchie inspects, measures and verifies them using? three standard rulers that are calibrated annually by Precision Measurements Corporation.?Click here to see the Certificate of Calibration. 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.