International Library of Technology · Scranton, International Textbook Co. · leaf 451
ion. The old-style, plain, woodencrosspiece with a porce-lain knob at each end ishardly sufficient. Some styles of mastarm are pivoted at thepole and are counter-balanced so that the armmay be swung down fortrimming. Fig. 47 shows a Cut-ter pole fixture of small size that has been used… … Fig. 41
Electrical engineering
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.], 1902, leaf 451](https://img.insideoutlibrary.com/img/1024/ia-electricengineer03inte-451-275.webp)
![An illustration from The Telegrapher [microform] (1864)](https://img.insideoutlibrary.com/img/200/ia-telegrapher04nati-12-6.webp)
