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Title: USGS Cartographer at Work

Description: Bill Campbell operates an Electrical Survey Net Adjuster (ESNA). The ESNA was used for the adjustment of levels and traverse.

Location: Sacramento, CA, USA

Date Taken: Jan 1 1957

Photographer: , U.S. Geological Survey

Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo.

Source:

File Details:
Type: JPEG image - 3.83 MB
Dimensions: 2813 x 2170
Resolution: 300 dpi

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Tags: cartographic cartography equipment map surveying topographic topography