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Wild T1A heerbrugg theodolite surveying equipment case
Wild T1A Heerbrugg Theodolite Surveying Equipment Case
Wild T1A Heerbrugg Theodolite Surveying Equipment with Case
On offer is this vintage 'Wild' model T1A Heerbrugg Switzerland Theodolite Surveying Equipment with the original Casing. Please excuse our ignorance of this item but we really can not tell you much about it or how to manually operate the equipment. Below is the contents from of a site we found. Questions are welcomed. Postage will be based on around 9kgs, International postage will be quite expensive so please be sure to ask so there will be no unpleasant surprises!
Please refer to photos as they form a major part of our description. Thank you!
The Wild T1A Double Center Theodolite is used for low-order triangulation, cadastral work, tunnel traverses, general traversing, tacheometry, property surveys, mine surveys, building site lay-outs etc. - in fact for most survey and engineering tasks where first or second order accuracies are not essential.
After the usual initial leveling-up, using the footscrews and plate level, the T1A is ready for vertical angles to be measured, there being no index level to center. The simple automatic vertical index, which replaces the usual level, thus makes vertical circle reading an easy matter and, as there are no mechanical parts, the liquid compensator has nothing to wear out-and nothing to maintain.
Each circle is read with the aid of an optical micrometer whose drum is cc).graduated to 20 (or 1c), with estimation made easily to 5 (or 10cc). Having two independent cylindrical vertical axes and two horizontal clamps (one each for the lower and upper plate and shaped differently to avoid confusion) the T1A allows the repetition method to be used for observing.
The T1A-E is identical to the T1A, except that its telescope provides an upright image - a feature often appreciated by users unaccustomed to working with an image that is reversed both laterally and vertically.
As the T1A (and T1A-E) can be removed from the tribrach without disturbing the centering, the famous Wild traversing equipment can be used with this theodolite, together with the full range of accessories, which is tabulated later.
http:// /theodolites2.htm
