IEC 60263 specifies standard proportions for the scales for plotting frequency characteristics and polar diagrams. Does not apply to audiograms.
IEC 60263 Ed. 4.0 b:2020
Original price was: $95.00.$47.00Current price is: $47.00.
Scales and sizes for plotting frequency characteristics and polar diagrams
International Electrotechnical Commission , 06/26/2020
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