1" Dia. Optical Flat /Reference Grade Flatness Gage, 0.000001", 1/20 Wave Band for Sale

1" Dia. Optical Flat /Reference Grade Flatness Gage, 0.000001", 1/20 Wave Band For Sale

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1" Dia. Optical Flat /Reference Grade Flatness Gage, 0.000001", 1/20 Wave Band:
$25.40

Up for sale is aDual-Side 1" Diameter Reference Flat accurateto 1.1 micro-inch (1/20 wave band). Side 1 isreference grade, Side 2 is working grade. New from old stock, still in original packing material. The flatness of this part is verified as shown in the monochromatic flatness images of both sides to 100% of this optical flat being compared to a larger reference grade flat in the photos. Made from fused silica, this optical window has the hardness,& low expansion coefficient for your project needing a precisionreference flat orwindow. You can't make what you can't measure so this will give you the ability to guarantee flatness. Both sides are un-coated.

SPECS:

Substrate: Fused Silica

Diameter: 1" (25.4mm)

Thickness: 1/4" (6.6 mm, +/- 100 um)

Serial Number: ^

Accuracy Side 1: REFERENCE GRADE1/20waveband 546nm

0.000,001inch

Accuracy Side 2:WORKING GRADE1/5wave band 546nm

0.000,005inch

Evaluated conformance 6/14/2023

As always, your complete satisfaction is guaranteed.If not 100% satisfied with this, you may return. I have many happycustomers and would like you to become one as well.Sizes up to 5”dia. available.

Winning offer to pay $5.40 shippingwithin USA.