Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 149
■ -^ X — ^ — t-.™, ^ … Fig. 24. Wafer Heater and Jlouutius and are arranged to be supported in special fixtures, or the same assmall arc lamps. All parts are mechanically arranged so that renew-als may be easily made when necessary and it is not possible to inserta part belonging to one type of lamp into a lamp of a…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
