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

$ 74.97

Availability: 75 in stock
  • Item Type: Reference Flat
  • MPN: 86-113302
  • Condition: Reference grade fused silica optical flat. NOS. Perfectly New Pristine condition ... no scratches nor any chips or dings. Un-coated on one side, protective coating on second side. Polished dual sides to 1/20 wave band flat (about 1.2 micro inches)
  • Brand: Unbranded

    Description

    Up for sale is a
    Dual-Side 3" Diameter Reference Flat
    accurate to 1.25 micro-inch (1/20 wave band).  Both sides are
    reference grade
    .  This does not show any usage...looks pristine.  The flatness of this part is verified as shown in the monochromatic flatness image of both to 100% of this optical flat being compared to a larger reference grade flat in the last 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.   This has one un-coated face and one AR coated face.
    The sides are polished to deter grease & grime.  Comes with dust-proof storage case to keep protected when not in use.  The monochromatic flatness image shows how flat this part is.
    SPECS:
    Substrate: Fused Silica
    Diameter: 3" (76.2
    mm)
    Thickness: 1/2" (13.1 mm)
    Serial
    Number: 298
    Accuracy Side 1: REFERENCE GRADE
    1/20
    wave band 546nm
    0.000,001
    inch
    Accuracy Side 2:
    REFERENCE GRADE
    1/20
    wave band 546nm
    0.000,001
    inch
    Evaluated conformance 12/19/2022
    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 .00 shipping within USA.