How to Use an Alidade
15:57
Measured Survey Using a Plane Table
5:59
Locating Fires with the Osborne Fire Finder
44:16
New Surprise! Cleaning and Restoration House Beautiful Old Full of Grass | Cleaned and Renovated
5:46
Fire Lookouts
18:59
Dentro da Torre Esférica do B-17
27:33
Land Surveying in the 1700's. It's a Fine Line. | Astrolabe | Circumferentor | Hadley's Chain
3:16
The Osborne Fire Finder
18:05