Presentado por: Roland Bunch
Evento: ECHO East Africa Highlands Symposium 2014 (27/10/2014)
A-frame levels can be used to trace contour lines for soil conservation, or irrigation ditches at ½ % slope. They are highly accurate, and cost nothing.
Presentado por: Roland Bunch
Evento: ECHO East Africa Highlands Symposium 2014 (27/10/2014)
A-frame levels can be used to trace contour lines for soil conservation, or irrigation ditches at ½ % slope. They are highly accurate, and cost nothing.