Non-destructive testing. Aids to visual inspection. Selection of low-power magnifiers

Non-destructive testing. Aids to visual inspection. Selection of low-power magnifiers

£112.00
£112.00
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1   Scope

1.1   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:
    1. a) binocular, normally with a long working distance (Type C.1);
    2. b) 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).