Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 365
4102. Polar Planimeter, German silver, for every kind of measure-ment, with directions, in case each, $25.00 … 4104. Polar Planimeter, German silver, for every kind of measure-ment, with special arrangement for finding rapidly the meanheight of indicator diagrams, with directions, in case each, $33.00 358
Engineering instruments · Drawing instruments
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
