Sokkia TM1A Digital / Micrometer Theodolite

Dependable and Reliable

Sokkia Digital / Micrometer Theodolites share these convenient features:

•	The automatic vertical circle indexing ensures speed and accuracy on the job.
•	Circle readings are projected from opposite sides of the circle to eliminate eccentricity errors.
•	A circle positioning ring allows fast pre-setting of any horizontal circle reading (TM6).
•	Separate horizontal and vertical windows make readings easy and accurate to reduce confusion.
•	A self-checking optical plummet in the alidade makes set-up fast and easy.
•	Dual collimator finders make aiming faster than ever.

TM1A

The Sokkia TM1A is so well-made and rugged, you can use it every day on your toughest jobs. It’s our finest optical theodolite—capable of second-order precision work.

The TM1A reads direct to 1" on both horizontal and vertical circles. Its ultra-fine graduations on glass are carried optically to the reading microscope adjacent to the telescope eyepiece for utmost definition and precision in reading. Plus, horizontal and vertical readings are in different colors to avoid confusion.

7312-00 TM1A	One second theodolite, complete with main unit with WA tribrach, LA1 illumination unit, sunshade, lens cap, plumb bob, vinyl cover, tool kit, operator’s manual and carrying case.
IMPORTANT: When placing your order, please specify the required angle unit: 360º sexagesimal or 400gon.

TM1A Quick Specs

	TM1A
Telescope
Horizontal/Vertical Circle Graduation	20'
Micrometer Reading	1"
Estimation	0.1"
Stadia Ratio	1:100
Magnification	30x
Resolving Power	2.5"
Minimum Focus	4.3 ft. (1.3m)
Level Vial Sensitivity
Plate	20" / 2mm
Circular	10" / 2mm

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