Description: Up for sale is a Dual-Side 1" Diameter Reference Flat accurate to 1.1 micro-inch (1/20 wave band). Side 1 is reference 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 precision reference flat or window. 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 SilicaDiameter: 1" (25.4mm)Thickness: 1/4" (6.6 mm, +/- 100 um)Serial Number: ^Accuracy Side 1: REFERENCE GRADE 1/20 wave band 546nm 0.000,001 inchAccuracy Side 2: WORKING GRADE 1/5 wave band 546nm 0.000,005 inchEvaluated conformance 6/14/2023 As always, your complete satisfaction is guaranteed. If not 100% satisfied with this, you may return. I have many happy customers and would like you to become one as well. Sizes up to 5” dia. available. Winning bid to pay $5.40 shipping within USA.
Price: 25.4 USD
Location: Erie, Colorado
End Time: 2024-11-10T02:50:54.000Z
Shipping Cost: 5.3 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: Unbranded
MPN: NA
Item Type: Reference Flat
