a). Micro optic and manual operated.
b). Maximum working distance : 12m
c). Accuracy : 6 sec. of arc
d). Resolution: 0.5 sec. of arc
a). Measures surface flatness using collimated light and a moving lens to focus the beam as it travels across the test surface.
b). Any angle can be measured by comparison with a standard angle or any change of angle can be observed instantly and accurately.