Accessories for Wild Theodolites

Wild Heerbrugg Ltd. manufactures many other accessories and attachment each designed to provide additional accuracy or an extra function for the basic instrument. The main items which can be used with the T1A, T16 and T2 theodolites are described briefly below - in some cases the same accessory fits each type of theodolite and in others there are slightly different models. A Wild dealer should be consulted and full details of the theodolite supplied before ordering a specific accessory.

 

Traverse targets (for the 3-tripod method), with or without the large target faces which slip over the screws of the main target.

2 m Subtense bar
 

DM1 Distance Measuring Wedge, which is used with a special horizontal staff and provides optical distance measurement up to about 500 ft (Accuracy at 300 ft. is 1/10’000).

Objective Pentaprism, used mainly in mines for vertical transfer of bearings to another horizontal level (Accuracy 1/70’000).

Wild Roelofs Solar Prism, giving a rapid sun azimuth by direct sighting to the sun's center with four overlapping images (Publication G1 403e).
 

GOA Autocollimation Eyepiece, which allows an ordinary theodolite to be used as an autocollimation instrument.

Diagonal Eyepiece, for sightings up to the zenith (also attached to the reading tubes).

Eyepiece Prisms, for steep sightings to within 25° of the zenith

Sunglasses, for sighting bright targets.
 

Telescope Level, allowing an ordinary theodolite to be used as a spirit level.

Telescope Roof Plummet for plumbing beneath a roof mark or for the upward transfer of a plumb point.

Tubular Compass (not with the all-steel T2), for the initial orientation of the horizontal circle to Magnetic North.

Circular Compass (not with the all-steel T2), which gives the magnetic azimuth of a line of sight.

Striding Level (T2 only), for time and latitude determination.