Browse Items (69 total)

Light Refactor(?)

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Physical DescriptionObject has a black cast iron base that is a cylinder with a hollow center. The inside of the cylinder is lined with felt. A metal lid covers the hollow center and a circular glass lens sits in the center of the lid. The lid has…

4242 compensating polar planimeter

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Physical Description: The Keuffel and Esser polar planimeter is composed of two individual pieces. One being the main body, and the other a tracer arm. Both sections are comprised of tarnished silver square rods with black markings indicating…

Weston D.C. Voltmeter, Model 45

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Front face with lid opened:

Knobs: Toward the top of the box on the front face, there are 3 screw knobs (two on the left, one on the right). Each dial has a knurled surface, and when unscrewed, reveals a metal electrical lead. Above the knobs…

Wang Laboratories Model 370 Programming Calculator

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A rectangular shaped (304.4 Length X 165.1Width X 355.6 Height mm) device. This frame is made of metal that is painted everywhere except the stainless steel bottom. The front of the calculator contains a panel and display board. The panel holds 56…

Pickett Model N600-ES Log Log Speed Rule

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Physical Description:
The Pickett Model N600-ES Log Log slide rule is constructed using three yellow painted aluminum bars. The “ES” in the model name means “Eye-Saver” and refers to the yellow painted construction. The two outer bars are called the…

Metallurgical Microscope

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Physical Description: This microscope is very clearly labeled as a metallurgical microscope. The material of the microscope appears to be brass with a shiny black enamel finished over the body and brass accents on the eyepiece, body tube, and…

Newton Balance

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The balance is contained in a cage of red-brown wood, atop a glossy black 20mm base made of either ceramic or stone, under which is larger red-brown colored base. Some scuff marks of normal wear and tear appear present on the front face as well as in…

Riehle Tensile Test Machine (2296 ALT)

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Physical Description: This civil engineering instrument consists of a base, a ground stand, and a lowercase “r” shaped frame. The frame holds a scale arm with an English pound sliding weight. One end of the scale arm holds a bucket. Extending off the…

Assayer's Scale/Apothecary Balance

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Physical Description: A rectangular oak case with glass panels stands on adjustable metal feet. The front page of the case is internally counterweighted to be lifted vertically by a metal handle. Inside the case is a brass beam balance with two…

Bico Hand Driven Centrifuge

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Physical Description: This machine consists of an iron base and an aluminum bowl that is mounted on the base. The bowl consists of a stationary 11” diameter outer bowl and a 9.75” diameter inner bowl that rotates. The inner bowl has a circular…