Bidspirit auction | Set 30 C. H. Stoelting

Set 30 C. H. Stoelting Co. Scientific Glass Slides - A collection of 30 scientific educational lantern slides manufactured by the C. H. Stoelting Company. Each slide is constructed from glass plates bound with black paper tape borders. The slides feature black and white technical diagrams, illustrations, and charts related to various scientific disciplines of the early 20th century. The subject matter includes optics (human eye anatomy, vision correction, concave mirrors, and photometry), electricity and magnetism (dynamos, transformers, armature windings, and electric motors), mechanics (pulleys, gears, and resolution of forces), and general physics and engineering (siphons, gas meters, thermometers, and hydraulic appliances). Each slide features the company name C. H. STOELTING CO. printed on the top border, with CHICAGO, ILL. and U. S. A. noted on the lower frame. Most slides include an affixed paper label at the bottom providing a catalog number and a detailed key for the figures depicted. Notable labels include L 180 Eye Errors and Corrections, M 750 Varieties of Siphons, E 125 Historic Types of Dynamos, and M 970 Air Brake. Approximate dimensions: 3.25 x 4 inches each.