In addition to the enhancement of functions inherited from their predecessors—the DTM-350 and DTM-330—the new models feature a large graphic LCD, ergonomic keyboard and improved software for superior operability. They also come with a remarkable long battery life of 16 hours, IPx6 waterproof construction and intelligent feature coding systems. A 10,000-record data memory with job manager is available as is an newly designed EDM that offers increased speed and range. Moreover, they incorporate Nikon’s superb optics as well as powerful and practical on-board survey programs. And all features are housed in a light and compact design.

Features:

±(3+2ppm x D)mm distance measurement accuracy
Same distance accuracy for both Prisms and Reflector Sheet
Just 1.6 sec. measuring time with 1mm distance resolution
5-second angle measurement accuracy
Quick and convenient feature code input system
USR user defined keys set as “ONE-TOUCH access� keys to your preferred functions
User customizable feature code list
First, on-site setting change capability
Feet & Inch input and display
A special version of the DTM-352 that allows operation at extremely low temperatures down to –30°C is available.

Specifications:

Telescope

Tube Length: 158mm/6.22 in.
Magnification: 33x (21x/41x with optional eyepieces)
Effective diameter of objective: 45mm/1.77 in. (EDM: 50mm/1.97 in.)
Field of view: 1°20’
Resolving power: 2.5�
Minimum focusing distance: 1.3m/4.26 ft.

Distance measurement

Range with Nikon specified prisms

Normal conditions: (ordinary haze, visibility approx. 20km / 12.5 miles)
With reflector sheet (5x5 cm): 5 to 100m (16.4 to 328 ft.)
With mini prism: 1,000m/3,280 ft.
With single prism: 2,000m/6,560 ft
With triple prism: 2,600m/8,530 ft.
Good conditions : (No haze, visibility of over 40km/25 miles)
With reflector sheet (5x5 cm): 5 to 100m (16.4 to 328 ft.)
With mini prism: 1,200m/3,930 ft.
With single prism: 2,300m/7.540 ft.
With triple prism: 3,000m/9,840 ft.

Accuracy (Prism/Precise mode):
( 3+2ppm x D)mm
( 3+3ppm x D)mm (– 20°C for – 10°C, + 40°C for + 50°C

Measuring interval*1

Precise mode: 1.6 sec. (initial 1.6 sec.)
Normal mode: 1.0 sec. (initial 1.4 sec.)

Least count

Precise mode: 1mm/0.002 ft.
Normal mode: 10mm/0.02 ft.
Ambient temperature range*2: –20°C to 50°C/–4°F to +122°F

Atmospheric correction

Temperature range: : –40°C to 60°C/–40°F to +140°F
Barometric pressure: 400 to 999mmHg/533 to 1,332hPa/15.8 to 39.3 in.Hg
Prism offset: : –999 to 999

Angle measurement

Reading system: Photoelectric detection by incremental encoder
Horizontal angle: Diametrical(DTM-352)
Vertical angle: single
Minimum increment (Degree, Gon, MIL6400): Degree:1/5/10�, Gon: 0.2/1/2mgon, MIL6400: 0.005/0.02/0,05mil
DIN 18723 accuracy (horizontal and vertical): 5�/1.5mgon

Tilt sensor:

Type: Dual-axis(DTM-352)
Method: Liquid-electric detection
Compensation range: ±3'
Setting accuracy: 1"

Level vial

Plate level vial: 30"/2mm
Circular level vial: 10'/2mm

Optical plummet

Magnification: 3x
Focusing range: 0.5m/1.6 ft. to 8M
Display: Graphic LCD (128 x 64 dot)
Both sides(DTM-352)
Point memory: 10,000 records
Dimensions (W x D x H): 168 x 173 x 335mm/6.6 x 6.8 x 13.2 in.

Weight (approx.):

Main unit (with battery): 5.3kg/11.7 lbs.(DTM-352)
Battery: 0.4kg/0.9 lbs
Carrying case: 2.4kg/5.3 lbs
On-board Ni-MH battery BC-65

Operation time

Continuous distance/angle measurement: Approx. 16 hours*3
Distance/angle measurement every 30 seconds: Approx. 27 hours
Angle measurement: Approx. 27 hours
Quick charger Q-75U/E: Approx. 2.0 hours for full recharge
Quick charger Q-70C (12V DC cigarette lighter charger): Approx. 2.0 hours (fully discharged BC-65 requires more than one charge)