The 1” scale is divided into 0.05” divisions with the last 2/10” in 0.01” and final 1/20 in 0.001”. The 25mm scale is divided into 0.5mm divisions with the last 5mm in 0.1mm and the final 1mm in 0.01mm.

Size: 76mm x 25mm x 1.5mm
Glass type: Soda - lime
Line width: 0.0025mm (2.5μm)
Image type: Low reflective, chrome, surface
Case Plastic, foam lined

For speedy determination of a range of feature sizes within a given spicemen.

Certificates of Calibration
Wherever there is a need for measurements to be traceable for quality purposes, Pyser-SGI offer UKAS and NPL certificates of calibration that are internationally traceable, so satisfy the requirements of NIST, DIN and National Metrology Institutes across the world.

a) Calibration by NPL
The National Physical Laboratory carries out measurements at selected points on the scales and grids and issues a certificate of calibration.

b) Calibration by UKAS accredited laboratory
A UKAS accredited laboratory carries out measurements at selected points on the scales and grids and issues a calibration certificate.

c) Measurement by Graticules
For applications that do not require the accuracy provided by calibration carried out by NPL or a UKAS accredited laboratory, Graticules can provide a Certificate of Comparison. The scale or grid is compared with NPL calibrated in-house standards and a statement is provided on the accuracy of the item with respect to these standards. This certification is not traceable.