ASTM-E1951:2014 Edition

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E1951-14 Standard Guide for Calibrating Reticles and Light Microscope Magnifications

Published By	Publication Date	Number of Pages
ASTM	2014	7

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Category: ASTM

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ASTM E1951-14

Historical Standard: Standard Guide for Calibrating Reticles and Light Microscope Magnifications

ASTM E1951

Scope

1.1 This guide covers methods for calculating and calibrating microscope magnifications, photographic magnifications, video monitor magnifications, grain size comparison reticles, and other measuring reticles. Reflected light microscopes are used to characterize material microstructures. Many materials engineering decisions may be based on qualitative and quantitative analyses of a microstructure. It is essential that microscope magnifications and reticle dimensions be accurate.

1.2 The calibration using these methods is only as precise as the measuring devices used. It is recommended that the stage micrometer or scale used in the calibration should be traceable to the National Institute of Standards and Technology (NIST) or a similar organization.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

calibration; filar micrometer; grain size; magnification; microscope; photography; reticle; stage micrometer; video systems;

ICS Code

ICS Number Code 37.020 (Optical equipment)

DOI: 10.1520/E1951-14