Calculator [Monroe 20 calculator]

Object detail

Accession number

2003.271

Maker

Monroe Calculating Machine Company

Production period

1970s

Description

Calculator, Monroe 20, battery or mains DC or AC. Desk type or hand-held machine. Black plastic digital key face with red plastic display panel at the top of the key face. In-built rechargeable battery. Grey plastic case. Black switch on left side for changing power mode from DC to AC. Metal information panel on the base reads - Monroe, A Division of Litton Industries Model 20 DC 72V 18W No.J498621, Made in USA. Reg. US Pay off. Marca Reg. Use appropriate Monroe Battery Chargers only.

Marks

MONROE / LITTON / A DIVISION OF LITTON INDUSTRIES / MODEL 20 D.C 7.2V 1.8W / NO J498621 / MADE IN U.S.A. *REG. U.S. PAT. OFF. * MARCAREG / USE APPROPRIATE MONROE / BATTERY CHARGERS ONLY Maker's Plate
MURRAY NORTH Hand-written

Media/Materials

Processed Material/Synthetic/Plastic
Processed Material/Metal

Credit Line

Monroe Calculating Machine Company. Calculator [Monroe 20 calculator], 2003.271. The Museum of Transport and Technology (MOTAT).

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Classification

Processor, Digital Data Calculator Tools & Equipment for Communication Data Processing T&E Data Processing Devices

Production place

Orange New Jersey United States of America North America Americas

Collection type

Computing and Digital Technology

Subject auto tags

Office supplies Office equipment Calculator Rectangle Font Gadget Composite material Machine Metal Number

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