|Diameter Range:||1-50mm||Diameter Tolerance:||+/-0.01mm|
The ruby ball is made of artificial Blue / RUBY monocrystal, which has the characteristics of corrosion resistance, wear resistance and good transmittance.
Ruby ball can be used as the insulation measuring head of measuring instrument and precision measuring instrument.
|Focal Length Tolerance||±2%|
|Surface Quality||60-40 Scratch-Dig|