Full Description

This International Standard specifies the characteristics of the following types of low-power magnifiers and gives recommendations for their selection for the inspection of surfaces.

Single-element magnifiers of magnification typically up to 4 (Type A).Multi-element magnifiers of magnification typically up to 10 (Type B).Twin-system magnifiers of magnification typically up to 15 (Type C), categorized as follows:binocular, normally with a long working distance (Type C.1);bi-ocular¹⁾, including those refined with stops or other attachments, for quasi-stereoscopic vision (Type C.2).Concave-mirror magnifiers with front-surface reflectors in powers typically up to 6 (Type D).

This International Standard is not concerned with:

watch-makers' loupes and spectacles;single-element, spherical- or cylindrical-lens magnifiers in which either the lens or the lens-mount rests on the surface of the object to be examined (this includes magnifiers provided with any form of graduated scale for the purpose of measurement);plastic lens sacs, liquid-filled;magnifiers intended for the examination of internal surfaces.

1) The distinction between bi-ocular viewing and stereoscopic viewing is defined in annex A.

Product Details

Published: 03/01/1998 Number of Pages: 6 File Size: 1 file , 47 KB Same As: BS ISO 3058:1998, BS ISO 3058:1998