MODERN METROLOGY.
A Manual of the Metrical Units and Systems of the present Century. With an Appendix containing a proposed English System. By Lowis D. A. Jackson, A.M. Inst. C.E., Author of “Aid to Survey Practice,” &c. Large crown 8vo, cloth
12/6
“We recommend the work to all interested in the practical reform of our weights and measures.”—Nature.
A SERIES OF METRIC TABLES.
In which the British Standard Measures and Weights are compared with those of the Metric System at present in Use on the Continent. By C. H. Dowling, C.E. 8vo, strongly bound
10/6
“Mr. Dowling’s Tables are well put together as a ready reckoner for the conversion of one system into the other.”—Athenæum.
THE IRON AND METAL TRADES’ COMPANION.
For Expeditiously Ascertaining the Value of any Goods bought or sold by Weight, from 1s. per cwt. to 112s. per cwt., and from one farthing per pound to one shilling per pound. By Thomas Downie. 396 pp., leather