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The Geological Society of America publishes a wide range of peer-reviewed scholarly works in the form of journals, books, field guides, maps, and charts. The GSA Bookstore also carries educational materials, plus a variety of field tools.
GSA Photo Scale/Time Scale, pkg. of 10
 MemberNon-Member
 $7.50$9.00
 
Year Published: 1988
Publication Type: Special
Product Code: PTS002
This handy field tool combines GSA's popular photo scale and geologic time scale. On one side is our Author's Photo Scale, calibrated boldly in centimeters (10) and U.S. inches (4). Includes a GSA seal for fine focus and an evaluation scale for granular material from 1 to 5 millimeters diameter. The reverse side includes the complete GSA Geologic Time Scale. Although legible, the printing on the time scale is small, identical to our wallet-sized time scale; you may need a hand lens to read it. Sold in packages of 10. Sturdy 20-mil X 2-1/2" X 6-1/2" tan vinyl printed in blue. Related: CTS001, CTS002, CTS003.