[스크랩] 고전에서 읽는 헤드청소법
after long use, the canals of the primus burners gradually become filed with char-coal deposits from vaporized petroleum and the gas is thus unable to escape for the purpose of removing all impurities we have constructed the apparatus shown here, with the help of which the burners can be thoroughly cleaned and be made as good as new the apparatus is supplied with 2,4 or 9 burn..