The graduation interval of the horizontal and vertical circles is 20' and the micrometer interval is 1'. The theodolite features a coincidence micrometer circle reading system. This is actually a slight disadvantage since the mirrors are located at different sides on the instrument and so reading the circles may not be as efficient. Instead of incorporating only one illuminating mirror for reading both the horizontal and vertical circles, there are two illuminating mirrors, one for the horizontal circle and one for the vertical circle. The tribrach is also fitted with a built-in optical plumb, which makes centring of the instrument over terrain point possible. The theodolite is supplied with a detachable tribrach (GDF-6) to which it is securely fastened by a special clamping device in such manner that the instrument cannot possibly fall down. Some of the typical surveying applications include triangulation, precise traversing, astronomy, tacheometry, engineering, cadastral, mining, setting out and optical tooling. It is commonly referred to as a 'universal' theodolite, since it is capable of coping with virtually any problem in surveying, engineering and industry. The instrument shown above is the Wild T2 (E) which was a follow-on of the original instrument and was manufactured in the 1950's.

This is the famous Wild T2 Micrometer Theodolite and due to its compact and sturdy construction it has been used by surveyors all over the world ever since Heinrich Wild created the first model T2 back in the 1920's.

Wild Theodolite Serial Numbers