投影儀主要功能是將物體放大投影在投影屏上來測定物體形狀、尺寸，檢測前我們有專用的校準片進行校準，確保其精度的準確性，主要用于測量產品螺紋機刀具。
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Precision
Randdh serves its global customer base from three strategically positioned manufacturing locations in the Singapore and China.
Quality
Randdh has design and manufactured innovative products for over five decades for world Mechanics manufacturers.
Value
The whole Randdh team is dedicated to providing world class customer service around the world and around the clock.