A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 170
IG PLUMBING AND GAS-FITTING. 139 … 4-10 140 PLUMBING AND GAS-FITTING. § 16 figures are crowded, it is advisable to draw a O around thefigures indicating diameters of pipes, in order to clearly dis-tinguish them from all others If any of the vertical pipes require to be offset or bent topass around obstructions, etc., or a horizontal…
Architecture · Building
Internet Archive · New York Public Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-627-372.webp)
