George B. Lesley using Geodimeter Model 2A for measuring distance by mercury vapor light over long distances. Pappy Shelton, chief of the geodimeter party, is on the radio.
| 516 x 640 | 57.45 KB | |
| 1032 x 1280 | 194.75 KB | |
| 1548 x 1920 | 395.71 KB | |
| 1951 x 2420 | 659.59 KB |
| Added On | 16th October 2015 |
| Viewed | 12 viewed |
| Downloads | 3 Downloaded |