Photocopy of the "General Electric Company Type ML Governor for Motor-Driven Air Compressors" manual or pamphlet, dated Jan. 1914, Bulletin No. 44590. Details the operation of the ML type air compressor governor which is fitted to a number of the BTM tramcars. Three pages, with number T26M in the top left hand corner. A further three pages, dated April 1917, Bulletin No. 54533, numbered T60M, gives a sectional view of the governor, parts diagram and parts listing. Photocopy provided by C. Tooke from his personal files. Two copies held. pdf image added 26/11/2016.trams, tramways, general electric, type ml governor, tramcar equipment, compressor governors