U.S. Geological Survey Open-File Report 2009-1101
The Partition Intervalometer: A Programmable Underwater Timer for Marking Accumulated Sediment Profiles Collected in Anderson Sediment Traps: Development, Operation, Testing Procedures, and Field Results
Figure 4. Exterior view of Intervalometer. The disc shown is approximately 1 ¼ inches in diameter, and the instrument is approximately 3 9/16 inches in diameter by 12 inches in length. |