Catalog entry for two spectroscopes. Spectroscopes use a lens or prism to disperse light into wavelengths. The spectroscopes shown can be handheld (top image) or attached to a camera (bottom image) to record the…

Catalog entry for instruments designed for photometric analysis. Photometers can be used to measure the presence and concentration of organic and inorganic compounds in solution by determining the absorbance of specific…

Catalog entry for a heavy current static machine.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of laboratory instruments for the physical sciences made by the Central Scientific…

Illustration of possible combinations of laboratory equipment on the "Universal Physical Laboratory Supports."

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of laboratory instruments…

Catalog entry for "Parsons' latest improved design, for controlling incandescent lighting circuits, and for demonstrating the laws of series and parallel combinations."

Part of Catalog K: Physical Apparatus for…

Catalog entries for a quadrant electrometer and an electrometer for radioactive measurements.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of laboratory instruments for the physical…

Catalog entry for an Electro Magnet apparatus. "This apparatus was designed to supply our own laboratory with an electro-magnet of sufficient strength and field concentration for magnetizing, experimentation, etc. With…

Catalog entries for standard battery cells and a Dynamo Analysis Apparatus, an early example of an electrical generator.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of laboratory…

Catalog entry for an instrument that measures the wavelengths of light through a chemical sample. Can be used to determine elements in a sample when different elements emit different wavelengths of light. The…

Apparatus for showing Tesla's experiments with electricity.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of laboratory instruments for the physical sciences made by the Central…

"These cells show the extraordinary property which selenium possesses of changing its electrical resistance under the influence of light."

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog…

Apparatus for showing the principles of an induction or alternating current motor and demonstrating the rotating magnetic field.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of…

Figure depicting "The Geryk" air pump, "an English pump (Fleuss' patents), and a strictly mechanical device with no valves in the usual sense of the word..."

Part of Catalog K: Physical Apparatus for Universities and…

Catalog published by Eimer & Amend in conjunction with the United States Manufacturing Chemists' Association (MCA) which reflects the standardization of apparatus manufactured by American chemical companies. Eimer &…

Fully illustrated catalog of laboratory equipment manufactured by the Vereinigte Fabriken Fuer Laboratoriumsbedarf (United Factories for Laboratory Supplies). Digitized content includes the work's front matter, a…

The Gaertner Scientific Corporation began as a small scientific shop established by William Gaertner in 1896 on Chicago’s Southside. The company, originally known as Wm. Gaertner & Co., manufactured astronomical and…

Catalog of scientific apparatus for chemical laboratories sold by the Emil Greiner Company. Promising superior quality and prompt delivery, the catalog includes items for sale such as burners, burets, pipettes, and…

Encyclopedia of technical chemistry. The work exists in two volumes; the first covers topics from Acetic Acid to Gas, and the second begins with Glass and ends with Zinc. Digitized content includes a limited selection…

Friedrich Christian Accum or Frederick Accum (1769-1838) was a German chemist whose most important achievements included advances in the field of gas lighting, efforts to keep processed foods free from dangerous…

Williams, Brown & Earl was an American optical instrument and laboratory supply firm formed by H. S. Williams and N. H. Brown at 918 Chestnut Street, Philadelphia, Pennsylvania. This illustrated catalog includes the…

Catalog for chemical apparatus produced by Philip Harris & Co., now Philip Harris Ltd., a British laboratory supply company that became a major supplier of equipment for school science. The brand name is now owned by…