Does anyone know the "official" reduction used for reducing an HI measurement made to the lower notch to a true vertical measurement for the Trimble SX10? The S6 manual has the reduction for that instrument, but I cannot find anything in the SX10 manual.?ÿ
I have done some measurements of the dimensions of the instrument, and I came up with the following values (HIn=HI measurement to the notch)...
radius=0.14 m
vertical offset=0.138 m
So, TV=Sqrt(HIn^2-0.14^2)+0.138
the given formula for the S6 is
TV=Sqrt(HIn^2-0.091^2)+0.158
The spec sheet says it has a trunnion axis height of 196 mm, which is the same as the S6 (and the Wild T2, and Zeiss S10, and other instruments).?ÿ
I did find in a newer Trimble Access help file a partial measurement. It says the offset from the notch to the trunnion axis is 0.138 m, it does not give the radius but that at least somewhat confirms what I am doing.
Trimble Access Help v2017.10, page 235.?ÿ
