Opus Angle Gauges are available as thin series gauges 50mm x 9mm or to NPL Specification MOY/SCMI/18 combination angle gauges.
Both styles are made from high quality steel and hardened to 800 Hv (64 Rc) Minimum. Each gauge is lapped with a superior, highly reflective, wringable finish. Flatness of each lapped face is 0.2 µm or less and the faces are square to the ground sides within 2 µm.
Angle is controlled to ± 2 seconds of arc. All gauges, sets and individuals, can be supplied with a UKAS calibration certificate issued by our own laboratory with a measurement uncertainty of ± 1 second of arc.