DAVIDSON OPTRONICS Model D-727 Scratch Samples to ASTM F-428

SCRATCH SAMPLES TO ASTM F-428 -- D-727

Davidson Optronics’ Model D-727 Scratch Samples meet ASTM Scratch Test Standard (Glass) adjunct F-428. They are approved by the ASTM F07.08 committee for the surface finish characterization of aircraft windows.
The sample set consists of six cover glassed and hermetically sealed 1˝ inch square samples of various scratch widths numbered –3 through –8.
Scratch Samples are described as follows:

F-428-3   --   very light

F-428-4   --   light

F-428-5   --   moderate

F-428-6   --   moderate

F-428-7   --   medium

F-428-8   --   heavy

Note that the Model D-727 Scratch Samples are to be used only for visual, qualitative comparison. These samples are not intended to be measured by width.

The six sample set comes in a protective hardwood case.

Certification supplied with the samples states that they are compliant with the master sample set maintained by Davidson Optronics.

Case Dimensions: 8˝" x 5Ľ" x 1˝"
Weight: 1˝ pounds
Shipping Weight: 2 pounds

Davidson Optronics, Inc.
Phone: (626) 962-5181
Fax: (626) 962-5188
E-mail: sales@davidsonoptronics.com