Spectrace Frame Test Equipment Eyeglass Expansion Durability Tester SL-SF17
Application
Eyeglass Expansion Durability Tester is used to determine the over-extend the temple arms of eyeglass
with certain distance, which can withstand opening and closing angles at certain force values and
repeatedly opening and closing, with the aim of detecting changes in temple arms life.
Eyeglass Expansion Durability Tester Video link