Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Back to the OSAC Lexicon

Focus Variation Microscopy

Surface topography measurement method whereby the sharpness of the surface image (or anotherproperty of the reflected light at optimum focus) in an optical microscope is used to determine thesurface height at each position along the surface.

Committee

Firearms & Toolmarks

Date Added to Lexicon

06/12/2023

Standard Source (Designation Number Title of Standard. Publisher, Place, Year.)

ANSI/ASB 061 Firearms and Toolmarks 3D Measurement Systems and Measurement Quality Control. AAFS Academy Standards Board (ASB), 410 North 21st Street, Colorado Springs, CO 80904, 2021. Source link