Before making spar bridges, men should be thoroughly instructed in the following methods of lashing spars together ... 448, To form a gyn or tripod trestle, the distance from the butts at which the centre of the lashing is to be, is marked on eachanbsp;...
|Title||:||Instruction in Military Engineering ... Compiled at the School of Military Engineering, Chatham. vol. 1|
|Author||:||Great Britain. Army. Educational and Training Establishments. School of Military Engineering, Chatham|