ما مدى دقة جهاز nicon DTM800

الزميل العزيز هذه بعض مواصفات اجهزه نيكون من نفس الموديل ارجو ان تفى بالغرض

NPL 820 Prismless Total Station
Magnification: 26x (16x or 32x with optional eyepieces)
Accuracy: 3" (DIN 18723)
Display Resolution: 1"/5"
Distance measurement range:
Non prism: 6m to 100m (depends on target surface).
Single prism: up to 5000m (in non prism mode)
Distance measurement: ±(3+3ppm x D)
Laser source: Class I non-visible
On-board Ni-MH battery BC-70:
3.5 hours/approx. 1,680 measurements (continuous distance/angle measurements);
9.0 hours (angle measurements only) Tow batteries included.
Weight: Main unit (approx.) 5.9kg/13.0lbs. (with BC-70 battery)

DTM 821 Total Station

Magnification: 33x (21x, 41x with optional eyepiece)
Angle measurement:
851 display 0.5"/1" DIN 18723 Accuracy 1";
831 display 1"/5" DIN 18723 Accuracy 2";
821 Display 1"/5" DIN 18723 Accuracy 3"
Distance measurement range:
851 (single prism) 2700m/7900ft (triple prism) 3100m/10200ft;
831 (single prism) 2500m/8200ft (triple prism) 2900m/9500ft;
821 (single prism) 1600m/5300ft (triple prism) 2300m/7600ft
EDM accuracy: ±(2+ 2ppm x D)mm
Clip-on Ni-MH battery BC-80: Continue operation time 7.5 hours (angle measurements only),
5.0 hours/approx. 15,000 measurements (continuous distance/angle measurements)
Weight (approx): Main unit 5.6kg/12.3 lbs (with battery BC-80)

NIKON DTM 831 Total Station

Magnification: 33x (21x, 41x with optional eyepiece)
Angle measurement:
851 display 0.5"/1" DIN 18723 Accuracy 1";
831 display 1"/5" DIN 18723 Accuracy 2";
821 Display 1"/5" DIN 18723
EDM accuracy: ± (2+ 2ppm x D)mm
Clip-on Ni-MH battery BC-80: Continue operation time 7.5 hours (angle measurement only), 5.0 hours/approx.
15,000 measurements (continuous distance/angle measurements)
Weight (approx): Main unit 5.6kg/12.3lbs (with battery BC-80)

NIKON DTM 851 Total Station

Magnification: 33x (21x, 41x with optional eyepiece)
Angle measurement:
851 display 0.5"/1" DIN 18723 Accuracy 1";
831 display 1"/5" DIN 18723 Accuracy 2";
821 Display 1"/5" DIN 18723
Distance measurement range:
851 (single prism) 2700m/7900ft (triple prism) 3100m/10200ft;
831 (single prism) 2500m/8200ft (triple prism) 2900m/9500ft;
821 (single prism) 1600m/5300ft (triple prism) 2300m/7600ft
EDM accuracy: ±(2+ 2ppm x D)mm
Clip-on Ni-MH battery BC-80: Continue operation time 7.5 hours (angle measurements only),
5.0 hours/approx. 15,000 measurements (continuous distance/angle measurements)
Weight (approx): Main unit 5.6kg/12.3lbs (with battery BC-80)