Measuring the surface stress of privacy glass. It is tested for dark glasses from 10% to 40% light transmission
A drop of index matching fluid on the tin side of the dark glass. Set the PGP-10 prisms on the oil. Press measure. Two buttons can be used to adjust the light path and intensity.
It is used on the tin side.
Glass light transmission: 10%-40% LT (dark glass)
Measurement range: 0 to 200 Mpa
Resolution: 0.1 degree/ 0.1 MPa