Carl Zeiss Jena Theo 010A
theodolite Carl Zeiss Jena Theo 010A
record number: 45
instrument type: theodolite
manufacturer: Carl Zeiss Jena
serial number: 805275
model: Theo 010A
weight: 4.40 kg
dimensions (l/w/h): 18/18/30 cm
year of manufacture: 1980
centering and leveling the instrument: optical plummet
circular level
toric level on the alidade
compensator

The second-order theodolite was made in 1980 and represents the pinnacle of Zeiss theodolite technology. The color and shape are typical of Zeiss instruments of the last era of optical instruments. The instrument has full functionality and is extremely structurally stable. The optical plummet, centric alidade toric level, compensator and repetition screw simplify the measuring process. The method of reading on circles with the coincidence of the diametral points of the circle division by means of a wedge optical micrometer provides the measurement resolution of 1''.

The instrument was used at the Faculty until the end of the 1990s, mainly for teaching work for measurements in horizontal and vertical trigonometric nets. It was very popular with students, mainly because of its ease of use and precision. It was also used for professional work in engineering geodesy.

In January 2017, the instrument was cleaned and paint damage was repaired.

Characteristics
horizontal circle vertical circle
diameter: protected, 86 mm protected, 86 mm
type of division: engraved division engraved division
limb implementation: glass bracket glass bracket
division: sexagesimal/sexadecimal sexagesimal/sexadecimal
unit: 10' 10'
Reading
number of reading points: 2 2
reading device: coincidence micrometer coincidence micrometer
number of units: 600 600
graduation unit: 1'' 1''
repetition: clamping and micrometer screw /
Telescope
diameter of objective: 40 mm
magnification: 30 x
type: telescope with internal focusing
cross hairs/reticule: Reichenbach's crosshairs, constant 100