
Miniature smoke chart.
NORMA vydaná dňa 15.8.1960
Označenie normy: BS 2742M:1960
Dátum vydania normy: 15.8.1960
Približná hmotnosť: 300 g (0.66 libier)
Krajina: Britská technická norma
Kategória: Technické normy BS
A chart, printed in shades of grey matt lacquer, which when held at about 5 ft from the observer gives readings of the density values of smoke from chimneys. These are comparable with those obtained from the BS Ringelmann Chart (BS 2742C). The method of use is explained in BS 2742. Status: Confirmed