About Magazine Podcasts Events
Museum Hours

Digital Collections

Scientific apparatus and instruments, Electronics

Beckman Helipot Potentiometer Model SA1400A

  • Undated

Rights

BY 4.0

Download selected image

PDFSmall JPG1200 x 1486px — 127 KBLarge JPG2880 x 3566px — 621 KBFull-sized JPG6100 x 7554px — 2.3 MBOriginal fileTIFF — 6100 x 7554px — 132 MB
View
This work is licensed under a Creative Commons Attribution 4.0 International License.
PDF
Download PDF

Black finished cylindrical casing with three copper electrodes in a line next to product inscription; nickel knob is raised above the cylinder; outer dial goes from 0-15 (but only three digits are visible through its viewing slit); outer dial value changes when inner dial (0-100) is manually rotated 360 degrees; knob handle is black plastic.

Potentiometers are used to measure electromotive force (emf) by balancing it with a known emf. The concept was first developed in 1841 by J. C. Poggendorff and improved throughout the 19th century by Latimer Clark and J. A. Fleming.

Manufacturer
Place of manufacture
Format
Genre
Medium
Extent
  • 7.9 cm H x 5.7 cm Diam.
Inscription
  • (On bottom) "311-022-00"
Subject
Rights Creative Commons Attribution 4.0 International License
Credit line
  • Courtesy of Science History Institute

Institutional location

Department

Related Items

Cite as

Science History Institute. Beckman Helipot Potentiometer Model SA1400A. Photograph, 2017. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/nc580n05b.

  Export citation (RIS) ?

This citation is automatically generated and may contain errors.

The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.