Lsm-901 glass surface stress tester Lsm-901 applied to the glass surface stress test, stress range of 100-1500 mpa (mn/m2). Lsm-901 usually semi-tempered glass measuring the stress and measurement process is very fast. Compact design aesthetic appearance, when used to install a battery, can be measured anywhere. Lsm-901 through the appropriate replacement eyepiece micrometer, the chemicals can be heated glass for testing. Original packing
