Requirements for the construction and operation of instruments designed to give an alarm when smoke emission from a chimney exceeds a chosen Ringelmann shade.Cross References:BS 2741BS 2742Addendum No. 1 to BS 2742:1969BS 2811
BS 2740:1969
Original price was: $160.02.$80.00Current price is: $80.00.
Specification for simple smoke alarms and alarm metering devices
BSI Group , 12/31/1969
Pages: 14



