9427302

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In stock

Details

Material: UVFS C7980 0F;
Centering: <3 arcmin;
S2: L/4, 20-5 S-D;
S1(concave): ROC=-500mm+/-1%, MEASURING REPORTS including these measuring:
Diameter, mm: 20.0(+0/-0.05) mm
Chips: <0.1 mm
Protective chamfers: 0.1-0.2mm @ 45deg;
Edge thickness, mm: 5(+/-0.1) mm;

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