IMAGE
Duff hygrometer spikes being dried in an electric oven Item Info
- Title:
- Duff hygrometer spikes being dried in an electric oven
- Photographer:
- Swan, Kenneth D. (Kenneth Dupee), 1887-1970
- Date Created:
- 1935
- Description:
- Every duff hygrometer must be calibrated annually. This is done by testing each instrument in several cans each filled with duff of known moisture content. These cans, with holes in the ends for inserting the duff hygrometer spikes, are shown here being dried in an electric oven. G. Lloyd Hayes pictured; the oven is still in use.
- Location:
- Bonner County Priest River Experimental Forest Office
- Latitude:
- 48.35083333
- Longitude:
- -116.8344444
- Moscow Number:
- 3032
- Forest Service Number:
- 350669
- Source:
- The sources for the photos in this collection were as follows: Priest River Experimental Forest, Moscow Foresty Sciences Lab, USDA-Forest Service Region 1 archive, University of Montana Library Gisborne Collection, and Ms. Susan Marsh
- Source Identifier:
- FireAlbum18
- Type:
- Image;StillImage
- Format:
- image/jpeg
Source
- Preferred Citation:
- "Duff hygrometer spikes being dried in an electric oven", Experimental Forest and Savenac Nursery Archive, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/expforest/items/expforsav347.html
Rights
- Rights:
- Material produced by the United States Forest Service and is in Public Domain. For more information, please contact University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu.
- Standardized Rights:
- https://creativecommons.org/publicdomain/mark/1.0/