The museum is open Fridays through Tuesdays 11 a.m. to 4 p.m. Free timed-entry passes are required. Review our latest visitor safety guidelines.

Photometric Test Lamp

Photometric Test Lamp

<< >>
Usage conditions apply
Description (Brief)
Osram tungsten lamp designed to emit a specific amount of light. For use in testing at the National Bureau of Standards.
Currently not on view
Object Name
incandescent lamp
date made
ca 1965
Physical Description
tungsten (overall material)
overall: 6 3/4 in x 4 in; 17.145 cm x 10.16 cm
ID Number
accession number
catalog number
Credit Line
from the U. S. Department of Commerce, National Institute of Standards & Technology
See more items in
Work and Industry: Electricity
Electric Lamps
Energy & Power
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.


Add a comment about this object