DescriptionAlfredCornu.jpg French physicist AlfredCornu (1849-1902) Date 19th century date QS:P,+1850-00-00T00:00:00Z/7 Source [1] Author Unknown authorUnknown
Adjustment of Camera Spirit-levels
Use of the Instruments Comprised
The U.
2.
jpg
New
Phototopographic Instrument for
Surveys on Scales of 1:50000 and
100