Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 112
1009 1010 1012 1015 1009. Ruling Pen, 5J inches, fine joint and pin each, $1.05 1010. Hatching Pen, 6 inches, with pushing screw, three pens to onehandle each, 2.25 1012. Railroad Pen, 5i inches, both pens with joint each, 3.25 1015. Dotting Instruments, with three wheels in case each, 3.60 107
Engineering instruments · Drawing instruments
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-165-73.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-718-419.webp)