Slide rule
Use this image
Can I reuse this image without permission? Yes
Object images on the Ingenium Collection’s portal have the following Creative Commons license:
Copyright Ingenium / CC BY-NC-ND (Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
ATTRIBUTE THIS IMAGE
Ingenium,
2005.0085.001
Permalink:
Ingenium is releasing this image under the Creative Commons licensing framework, and encourages downloading and reuse for non-commercial purposes. Please acknowledge Ingenium and cite the artifact number.
DOWNLOAD IMAGEPURCHASE THIS IMAGE
This image is free for non-commercial use.
For commercial use, please consult our Reproduction Fees and contact us to purchase the image.
- OBJECT TYPE
- special purpose/cardboard/reactance
- DATE
- 1942
- ARTIFACT NUMBER
- 2005.0085.001
- MANUFACTURER
- Perry Graf Corp.
- MODEL
- Reactance Slide Rule
- LOCATION
- Maywood, Illinois, United States of America
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 2
- AKA
- N/A
- Patents
- N/A
- General Description
- coated cardboard with metal grommets
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 22.0 cm
- Width
- 9.0 cm
- Height
- N/A
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Mathematics
- Category
- Calculating devices
- Sub-Category
- N/A
Manufacturer
- AKA
- Perrygraf
- Country
- United States of America
- State/Province
- Illinois
- City
- Maywood
Context
- Country
- Canada
- State/Province
- Unknown
- Period
- after 1942+
- Canada
-
An American made manual calculating device used by a Canadian electronics engineer in the course of his work. The previous owner of this calculating device was Mr. Bob Bennett, who was born in 1920 in Fort William, Ontario. He attended McGill University, graduating in 1942 with a degree in electrical engineering. During WWII he was in the Signal Corps, stationed in Ottawa from 1942-1946, and was involved in radio design and development. In 1946 Mr. Bennett joined the Canadian Pacific Railway but rejoined the Army in 1947 and remained until 1960 working in radio telecommunication research and development. From 1960 to 1979 Mr. Bennett worked in the Public Service in electronics and telecommunication engineering, largely with D&D. - Function
-
This aid allows the user to solve "resonant frequency, capacitive reactance, inductive reactance, coil 'Q' an dissipation factor problems that cover a frequency range from 5 cycles per second to to 10000 megacycles". - Technical
-
An example of a specialized slide rule made by Perry Graf Corp. but distributed as a promotional item by Shure Brothers. The ability to do quick calculations is always useful. The ability to advertise in a manner that the client will continue to see a company name is considered effective. Placing a company name on a functional item like a slide rule achieves both aims. Shure Bothers manufactured and designed microphones, pickups, cartridges and the like. - Area Notes
-
Unknown
Details
- Markings
- black and white lettering in one side reads 'SHURE BROTHERS, INC. Reactance Slide Rule [script]/ USE THIS SIDE FOR CALCULATION OF RESONANT FREQUENCY PROBLEMS', 'SHURE/ MICROPHONES [logo]', 'Designers and Manufacturers of Microphones/ and Acoustic Devices', and 'SHURE BROTHERS, INC. 225 WEST HURON STREET, CHICAGO, U.S.A.' with black markings and instructions/ black lettering on the other side reads in part 'CAPACITIVE/ REACTANCE' and 'INDUCTIVE/ REACTANCE' with logos reading 'SHURE/ MICROPHONES' and black markings and instructions/ black lettering on slide reads ' Copyright 1942, Shure Brothers, Chicago, Ill./ Printed in United States of America/ Perry Graf Corp., Maywood, Ill.'
- Missing
- appears complete
- Finish
- teal blue, yellow, white and black finished cardboard/ plated metal
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Perry Graf Corp., Slide rule, circa 1942, Artifact no. 2005.0085, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2005.0085.001/
FEEDBACK
Submit a question or comment about this artifact.