Browse Items (69 total)

Wang Laboratories Model 370 Programming Calculator

WANG FrontalView.jpg
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…

Type 2 Amsler Polar Planimeter

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Planimeters in general are used to calculate the area enclosed inside an arbitrary shape on a plane. Polar planimeter's, 103 types, perform a mechanical integration as a stylus is traced around the perimeter of the shape in question. Because the…

Two-circle Contact Goniometer

2CircContactGoniometer(AESMM)-1.JPG
Physical Description: The two-circle contact goniometer has a tripod brass base painted black. A small brass graduated disc is connected to the center of the base on a pedestal, and the center of this disc is allowed to rotate. A small pedestal is…

Surveying Transit

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Physical Description:The transit is broken up into three different layers. Starting at the base, there is a opening in the bottom allowing the device to be fixed to a tripod, or legs as they were referred to by Gurley, the creator of the transit. (1)…

Snatch block meter wheel

GLRC-Snatchblock-1.JPG
Physical DescriptionA large pulley wheel in two slightly domed faces, the one communicating the axle of the pulley into a geared couting box with small dial ponters on either side.Functional DescriptionAs the cable passes though the main wheel, the…

Shimadzu UV160U Spectrophotometer

Shimadzu_UV160U_Spectrophotometer(forestery)-1.dox.JPG
Physical Description The spectrophotometer consists of four sections; a screen, a touchpad, a glass sample bay, a light bay, and a power control section. The spectrophotometer is similarly built to an early computer with the processing system as a…

Secohmmeter (inductance measurement)

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April 2021: this device has been reidentified as a secohmmeter and will be updated with information soon.  Exciting find! Physical Description: Rectangular brass box with removable lid on top of black iron base. Brass box is mostly hollow. A shaft…

Salmoiraghi Planimeter model 236-A

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Physical Description

Functional Description

Rittenhouse Tables of Contents

Rittenhouse_ToC v1-23 FULL.pdf
A simple consolidation of the tables of contents of the full run of the journal Rittenhouse, volumes 1 through 23 (numbers 1 through 70)