Jeffoptics (based in Beijing, China) has recently released the latest version of the JF-3 glass surface stress meter, the JF-3H, which can be used for testing float glass, annealed glass, heat strengthened glass and tempered glass with transmittance as low as 8%. For full details, please visit the website above.
Origin
Unknown
Journal Title
www.Jeffoptics.com
Sector
Flat glass
Class
F 4150