NOTE. The Scales, Tables and Rules contained in this pamphlet have been carefully compiled and coudensed from the best authorities, and care has been taken throughout to make use of only such as the requirements of the mechanic and miner call for. The compiler for many years resided and worked in the mining region, and often felt the want of a small pamphlet containing the weight and strength of different materials; rules for calculating the velocity and power of water, etc., etc., and the strength and weight of ropes and chains and such general information. It is offered with a full description and explanation of the use of Wire Rope, Wire Rope transportations, transmission of power by Wire Rope, Cable Railroads, etc., to those interested, trusting to meet their approbation. CALIFORNIA WIRE WORKS Successors to A. S HALLIDIE. |