Eric S. Stanfield
Theodore D. Doiron
Please contact the technical staff before shipping instruments or standards to the address listed below.
National Institute of Standards and Technology
100 Bureau Drive, Stop 8211
Gaithersburg, MD 20899-8211
|Description of Services||Fee ($)|
|13010C||Optical Reference Planes (Flats): Optical Flat, <152 mm (6"), Per Surface||1776|
|13011C||Optical Reference Planes (Flats): Optical Flat, 152 mm to 203 mm (8")||2317|
|13012C||Optical Reference Planes (Flats): Optical Flat, 203 mm to 304 mm||3039|
|13013C||Optical Reference Planes (Flats): Optical Flat, >304 mm (12")||3799|
|13014S||Optical Reference Planes (Flats): Three Flat Calibration||At Cost|
Fees are subject to change without notice.
Optical reference planes are tested interferometrically, with the test surface horizontally supported on three equally spaced pads located at 0.7 of the radius from the center. The measurement is performed along two marked orthogonal diameters. The technical contact listed should be consulted for these calibrations.
References-Optical Reference Planes
The Calibration of an Optical Flat by Interferometric Comparison to a Master Optical Flat, C. P. Reeve, Natl. Bur. Stand. (U.S.), NBSIR 75-975 (Dec. 1975).