Theodolites functionality

There are Balloon Observation Theodolites.
Pibals and theodolites have a important history in meteorology. A pilot weather balloon (Pibal) theodolite is a device that is similar to a surveyor's transit.

Unlike the surveyor's transit a pibal theodolite utilizes a "bent axis telescope".
There is 10sec Digital Theodolite.

The Diagonal Eyepiece is for use in areas where large buildings or obstacles prevent an ideal working distance between the Theodolite and target object.

With the eyepiece, any target can be measured as long as the distance is at least 4-1/4' (1.3m) between the instrument and target.

The Solar Filter is used on the Theodolite to prevent glare under bright sunlit conditions, or when the sun must be sighted to determine position.
The theodolite's 22-power non-inverting telescope has two focusing adjustments; one for the precision reticule focus and another for focusing the target.
The teak tripod contains a second round spirit level and the height is adjustable to a maximum height of 5 feet, 9 1/2 inches (177 cm) with a maximum eye height of 5 1/2 feet (168 cm).