Cover image for Switches and crossings. Formulae for ascertaining the angles of crossings, the lengths of switches, and the distances of the points of the crossings and the heels of the switches from the springing of the curve.
Title:
Switches and crossings. Formulae for ascertaining the angles of crossings, the lengths of switches, and the distances of the points of the crossings and the heels of the switches from the springing of the curve.
Author:
Donaldson, William.
Personal Author:
Publication Information:
London : E. & F.N. Spon, 1871.
Physical Description:
vi, 1 unnumbered page, 256 pages : diagrams on 6 plates (2 folded) ; 22 cm
General Note:
"Errata" slip mounted on p. [v]; announcement of forthcoming Pocket-book of tales, on pl. 1.
Language:
English
Format :
Book