Posted 11 years ago
aghcollect
(2304 items)
This is a "Lightnin" Tank Volume Calculator Slide-Chart - it was used to measure volume capacities for various shapes and sizes of mixing and holding tanks (including railroad tanker cars). - Same concept and use as a slide-rule but for industrial "in-the-field" on sight calculations. - One side is the volume calculator and the other side is a mixing process analyzer.
- - - -This one was used in the chemical industry (food additives and hygiene products)
- - - - ©1962 Mixing Equipment Co. / Slide-Chart by PerryGraf, Maywood, Illinois
