Hi Folk... I am interested in surveying azimuths with a precision and accuracy of about 1 minute of arc. I have been finding true north using a sunshot technique (theodolite, clock, nautical almanac) and have been getting good reproducible results which have been satisfactory. But the...
Hi - I have just received delivery of a Zeiss Theo 010 Secundentheodolit. The instrument is in good order, but there seems to be an error in the adjustment of the vertical circle micrometer. The attached pic shows what I see when the vertical scale is selected. Is there anyone who has any...
Hi Folks - I am a professional electrical engineer, but as a student did a common 1st year with Civils, Mechanicals & Aeros, so feel that I should be understand some basic ideas in civ. eng. But this one has stumped me.
I became interested in corbelling after crawling into the wonderfully...
