GB/T 20968-2007 English PDF

US$174.00 · In stock
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GB/T 20968-2007: Non-destructive testing -- Aids to visual inspection -- Selection of low-power magnifiers
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20968-2007	174	Add to Cart	3 days	Non-destructive testing -- Aids to visual inspection -- Selection of low-power magnifiers	Valid

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Basic data

Standard ID: GB/T 20968-2007 (GB/T20968-2007)
Description (Translated English): Non-destructive testing -- Aids to visual inspection -- Selection of low-power magnifiers
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 19.100
Word Count Estimation: 9,956
Date of Issue: 2007-07-02
Date of Implementation: 2007-12-01
Adopted Standard: ISO 3058-1998, IDT
Regulation (derived from): National Standard Announcement 2007 No.6 (Total No.106) (National-Standard-Commission)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the following types of low- power magnifiers features. And recommended choice for surface testing. Single magnifying lens, typically four times amplification rate (A -type). Multi- piece mirror magnifying glass, typical amplification rate of 10 times (B type). Dual system member magnifier, typically 15 times amplification rate (C -type), the following two types: a) the binoculars usually have long working distance (C. 1 type), b) Binocular ", with fine or other accessories for stereoscopic viewing (C. 2 type) concave lens magnifying glass, fitted with a front surface mirrors, six times the rate of a typical amplification (D -type) this standard does not involve: watchmaker set in the orbital loupe and glasses, a lens or magnifying lens holder can be placed on a single subject surface mirror, spherical or cylindrical lens loupe (a magnifying glass for a variety of points, including with the scale of measurement), filled with liquid, liquid plastic lens capsule, for the inner surface inspection loupe.

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