FastSHIP* Optical flat parallel double side 40mm / 1.18” Flatness 0.07µm λ/10

Description

Hello, my name is Anton, I am new here but I have very big experience in international selling, so please buy with confidence.
By your request I make any additional photos and video!
Satisfaction guaranteed.
For sale lot of 1.
Optical flat parallel double side 40mm / 1.18” Flatness 0.07µm λ/10
New old stock. Perfect condition. Please see actual photos.
Actual photos (ruler in centimeters).
Made in USSR (Top Quality).
Specifications:
Diameter: 40+-1 mm (1.18+-0.039 inch)
Thickness
:
65
-66 mm (1.57-1.61 inch). The exact value is indicated on the edge of the plate.
Flatness of both side: 0.07 micrometer = 0.00007 mm (0.0000028 inch) – this is 1/10 wave!
Parallelism:
0.2 micrometer
=
0.0002 mm (0.0000079 inch)
Made from fused Silica Quartz.
Made in USSR (Top Quality).
Serial numbers can differ from photos, all the other parameters in the same to all my optical flat-parallel plates.
Delivery times (delays beyond these times are very rare):
EU - 14-24 days
US and Canada - 14-28 days
Rest World - 14-30 days.
Please contact me if you have any questions or any problem occurs.
Payment via PayPal.
Returns accepted.