Two methods are defined and the symbols specified as shown in the figures. The direct orthogonal projection is symbolized by two parallel arrows running vertically to a dash-and-dot line, and the mirror-inverted orthogonal projection by two parallel double arrows running vertically to a dash-and-dot line.
1. Scope
1.1 This Standard establishes a uniform relationship between shaft size and key size for parallel and taper keys.
1.2 This Standard covers the size, type and tolerances of paralle l and taper keys, and their relationship to shaft diameters and bore diameters. The size and tolerances contained in this Standard are intended for single key application only, except tangential…
Applies to transverse track recorders, i.e. recorders making use of four video heads rotating in a plane perpendicular to the direction of tape motion. Defines the electrical and mechanical characteristics of equipment which will provide for interchangeability of recordings. The clauses of this standard are in
accordance with CCIR specifications, unless otherwise specified.
See IEC 752.
Letter symbols to be used in electrical technology. Part 2: Telecommunications and electronics
Defines rules for the use and writing of symbols for general quantities, symbols for quantities concerning two-port networks, symbols for line transmissions of signals (including cables), symbols for radio wave propagation, symbols for quantities concerning waveguide propagation, symbols for aerials (antennas), symbols for electro-acoustics and symbols for equivalent circuits of piezo-electric…
Methods for measuring the performance of water-heaters for household purposes
States and defines the principal performance characteristics of electric storage water-heaters which are of interest to the user and to describe the standard methods for measuring these characteristics.
This standard is concerned neither with safety nor with performance requirements.
Thermal time delay switches for use in equipment for telecommunications and in electronic applicatio...
Defines general requirements and measuring methods applicable to thermal time delay switches for use in equipment for telecommunication and in electronic applications employing similar techniques.
Method of measurement of speed fluctuations in sound recording and reproducing equipment
Relates to a method of measurement of speed fluctuations in sound recording and reproducing equipment. Applies to the method using the weighted peak technique for measurement of flutter and wow and defines the characteristics of the measuring equipment.
Supplement B - Methods of measurement for radio transmitters - Part 3: Wanted and unwanted modulatio...
Defines general terms relating to unwanted modulation and terms relating to amplitude and frequency-modulated transmitters. Specifies general measurement conditions and methods of measurement for FM and AM noise and hum levels.
Methods for measuring performance of household electric ranges and ovens
Applies to ranges, cooking tables, ovens and similar appliances for household use. This publication defines the principal performance characteristics of these appliances and describes the standard methods for measuring these characteristics.
