Sewa Theodolite Manual Wild T0

The Wild T0 Compass Theodolite is a compact lightweight instrument, which can be used either for observing and setting-out magnetic bearings or as a normal theodolite for measuring or turning-off angles. It is particularly useful for rapid traversing, based on magnetic bearings, especially in areas where visibility is limited and the traverse legs likely to be short. The T0 can also be used for photogrammetric ground control surveys, low-order detailing, on building sites or as a recon- naissance instrument.

The compass theodolite has a spring lever which to be moved to lower the compass circle onto its pivot. As this lever returns to its original position when released, thus raising the circle, the pivot can be damaged only as a result of particularly careless mishandling. Horizontal (i.e. Compass) Circle readings are of unusually high .accuracy for an instrument of this type and size, because of the coincidence setting of the diametrically-opposite parts of the circle. Horizontal and vertical circle readings are made to the nearest minute. The telescope has a magnification of 20x.

Accessories which can be attached to the T0 include a telescope level, the Wild Objective Pentaprism, the Wild – Roelofs Solar Prism and an eyepiece sunglass for sighting bright objects.