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(1 - 20 of 30)
Lietz drop compass
Title
Lietz drop compass
Format
photograph: print
Proportional dividers
Title
Proportional dividers
Format
photograph: print
Description
Lietz calibrated proportional dividers.
Proportional dividers
Title
Proportional dividers
Format
photograph: print
Description
Calibrated proportional dividers.
Elliot beam compass
Title
Elliot beam compass
Format
photograph: print
Dotting instrument
Title
Dotting instrument
Format
photograph: print
Description
Used for drafting.
Brass plumb bob
Title
Brass plumb bob
Format
photograph: print
Galvanometer, DC moving coil, reflecting, type P
Title
Galvanometer, DC moving coil, reflecting, type P
Format
photograph: negative
Description
Serial no. 208861. According to the Leeds and Northrup catalog ED 1936, this is a DC moving coil, reflecting galvanometer, type P. This design is for wall-mounting and could be used as part of a suggested laboratory lamp and scale device. Mfg: Leeds and Northrup Co., Philadelphia, PA.
Small quartz spectrograph
Title
Small quartz spectrograph
Format
photograph: negative
Description
Mfg. Adam Hilger, Ltd.
Telescope pattern, Palomar 200″ (B)
Title
Telescope pattern, Palomar 200″ (B)
Format
photograph: negative
Description
Wood pattern used to make the casting of the telescope’s declination slip clutch. Mfg. by CIT.
Galvanometer, DC, moving coil, reflecting type R
Title
Galvanometer, DC, moving coil, reflecting type R
Format
photograph: negative
Description
According to Leeds and Northrup catalog ED 1936, this is a DC, moving coil, reflecting galvanometer, type R. Mfg: Leeds and Northrup Co., Philadelphia, PA.
Dietzgen odometer
Title
Dietzgen odometer
Format
photograph: print
Description
Chronometer style rolling analog Dietzgen odometer. Accuracy to 1/10″.
Beam compass
Title
Beam compass
Format
photograph: print
Description
C. Riefler, Nesselwant u. Munchen beam compass, 1 metre.
Keuffel and Esser drafting set
Title
Keuffel and Esser drafting set
Format
photograph: print
Description
Comprised of dividers and compasses.
Inscription devices
Title
Inscription devices
Format
photograph: print
Electroscope, quartz fiber
Title
Electroscope, quartz fiber
Format
photograph: negative
Description
Patent no. 2022117, model 1, serial no. 404. Set up on a wood box, containing battery cell. This instrument was acquired and modified by Wilfred Mann (the accused “fifth man” of the Philby spy ring) when he was at Chalk River. Later it was used by Mann in the radiation dept. of the NBS. Designed by C.C. and T. Lauritsen. Mfg: Fred C. Hensen Co., Pasadena, CA.
Geiger counter
Title
Geiger counter
Format
photograph: negative
Description
There is no information available for this item. Mfg: CIT Physics Shop.
Electroscope, quartz fiber
Title
Electroscope, quartz fiber
Format
photograph: negative
Description
Manufactured by Fred C. Henson Co., Pasadena. Design by C. C. Lauritsen. Physics.
Cylindrical calculator
Title
Cylindrical calculator
Format
photograph: print
Description
Nestlers Rechen-Walze cyclindrical calculator mounted on wooden base.
Planimeter
Title
Planimeter
Format
photograph: print
Description
Keuffel & Esser planimeter for determining areas and volumes for excavation or fill. Labeled “Planimenter No. 1, Dept. of Civil Engineering (Room 213 Thomas Lab.)”
Proportional dividers
Title
Proportional dividers
Format
photograph: print
Description
A Lietz Company rack and pinion calibrated proportional dividers. Housed in mahogany box.