TM 5-6675-306-14
1-8.
Difference in Models
Diameter of field ........................... 29 ft at 1,000 ft (8.8392 m
This manual covers only the Wild Heerbrugg Model T2-
at 304.8 meters)
74DEG Theodolite. No known unit differences exist for
Accuracy of circle readings ............ 1 second
the model covered by this manual.
Multiplication constant ................... 100
Addition constant .......................... 0
1-9.
Identification and Tabulated Data
Glass circles ................................. 360 degrees
a. Identification. The theodolite and carrying case
Sensitivity of plate level ................. 20 seconds per 2 mm
have the following identification markings:
(millimeter)
(1) Theodolite. The manufacturer's name,
Sensitivity of collimation level 30 seconds per 2 mm
model, and serial number are engraved on the U-
(millimeter)
standard.
Graduation interval of ................... 10 minutes
horizontal circle
(2) Carrying case hood. The manufacturer's
Graduation interval of ................... 10 minutes
model and serial number are stenciled on the carrying
vertical circle
case hood.
Magnification of microscope........... 30 diameters, plus or
b. Tabulated Data.
minus 2 diameters
(1) General.
Lamp ............................................. 2/2 v (volt), 3 amp
(amperes), miniature
Manufacturer ................................ Wild Heerbrugg Ltd.
screwbase
Heerbrugg, Switzerland
Battery........................................... BA 30
Model ........................................... T2-74DEG
(2) Dimensions and weights.
Telescope ..................................... 28X (power)
Tirpod
Telescope length ........................... 5.9 in. (14,986
extended ....................................... 63 in.(160.02
centimeters)
centimeters)
Shortest focusing distance ............ 4.5 ft (1.3716 meters)
folded ...................................... 38.5in.(97.79 centimeters)
Longest aiming distance at ............ 1,000 ft (304.8 meters)
weight ...................................... 14.4 lb. (Pound (s))
which degree can be read
Theodolite ..................................... 12.3 lb.
Longest aiming distance at ............ 465 ft (141.732 meters)
Shipping case w/theodolite ............ 35 lb.
which second can be
Carrying case ............................... 4.8 lb.
evaluated
Shipping crate w/tripod ................. 82 lb.
Normal range................................. 6 to 12 miles (9.6558 to
battery box, accessory
...............................................
19.3116 kilometers)
case, and field pack
1-7
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