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  1. 241
    Published 1951
    “...British Standards Institution,...”
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    B.A. screws, bolts, nuts and plain washers.
  2. 242
    Published 1944
    “...British Standards Institution,...”
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    B.A. bolts, screws, nuts and washers.
  3. 243
    Published 1965
    “...British Standards Institution,...”
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    Specification for steam turbines.
  4. 244
    Published 1975
    “...British Standards Institution,...”
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    Specification for direct-acting electrical recording instruments and their accessories.
  5. 245
    Published 1940
    “...British Standards Institution,...”
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    British standard specification for graphic (recording or chart-recording) ammeters, voltmeters, wattmeters, power-factor meters and frequency meters.
  6. 246
    Published 1973
    “...British Standards Institution,...”
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    Specification for electric cable soldering sockets.
  7. 247
    Published 1954
    “...British Standards Institution,...”
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    Electrical cable soldering sockets.
  8. 248
    Published 1954
    “...British Standards Institution,...”
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    Carbon brushes (parallel-sided) for use on commutator & slip-ring machines.
  9. 249
    Published 1938
    “...British Standards Institution,...”
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    British standard specification for for carbon brushes (parallel-sided) for use on commutator and slip-ring machines.
  10. 250
    Published 1972
    “...British Standards Institution,...”
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    Code of practice for the structural use of concrete.
  11. 251
    Published 1972
    “...British Standards Institution,...”
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    Code of practice for the structural use of concrete.
  12. 252
    Published 1972
    “...British Standards Institution,...”
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    Code of practice for the structural use of concrete.
  13. 253
    Published 1951
    “...British Standards Institution,...”
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    Graphical symbols for general electrical purposes.
  14. 254
    Published 1933
    “...British Standards Institution,...”
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    Graphical symbols for general electrical purposes.
  15. 255
    Published 1934
    “...British Standards Institution,...”
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    British standard specification for air-break circuit breakers for voltages not exceeding 660 volts. (excluding totally-enclosed and flame-proof types).
  16. 256
    Published 1954
    “...British Standards Institution,...”
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    Metallic resistance materials for electrical purposes.
  17. 257
    Published 1938
    “...British Standards Institution,...”
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    British standard specification for metallic resistance materials for electrical purposes.
  18. 258
    Published 1952
    “...British Standards Institution,...”
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    Oil circuit-breakers for alternating current systems.
  19. 259
    Published 1937
    “...British Standards Institution,...”
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    British standard specification for oil circuit-breakers, oil switches, and oil isolating-switches, for alternating-current circuits.
  20. 260
    Published 1937
    “...British Standards Institution,...”
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    British standard specification for oil circuit-breakers, oil switches, and oil isolating-switches, for alternating-current circuits.

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