After making contact, the forward end of tape is moved ahead. Note lantern and flashlight - these operations were conducted at night. Relatively constant night temperatures minimized expansion of tape. Fig. No. 12, Appendix No. 3, Report of Superintendent ... 1901, p. 258
Photo Category: Geodesy - Base Line
Photo Date: 1901
640 x 422 | 51.45 KB | |
1280 x 843 | 194.33 KB | |
1816 x 1196 | 453.66 KB |
Added On | 18th October 2015 |
Viewed | 61 viewed |