- Material: A5056 pipe
- Structure: change complicatedly, with inner groove
- Curve groove: width dimension 0.012；width changing amount 0.01，curve groove same height 0.01，position deviation ±3′，roughness Ra0.4
- Inner hole and out circle precision: roughness Ra0.4，01；dimension tolerance after finished by lubricate paint of inner hole 0.01
- Measuring: check the curve groove direct， groove position ±3′ is hard to measure
- Usage: big changing times digital SLR curve cam
Projector lens parts assembly
Projector casting parts
