|
Accurate
Instruments (NZ) Ltd. |
Theodolites
 |
 |
 |
 |
 |
|---|---|---|---|---|
| David White DWT-30 DWT-10 |
Nikon NE-101 |
Universal DT-105 |
Theodis ET-205 |
Lasermark DGT2 |
 These instruments are checked, calibrated and certified by Accurate Instruments then fitted with a shockwatch. |
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| . | DWT-30 | DWT-10 | NE-101 | DT-105 | ET-205 | DGT2 |
| Angle measurement | ||||||
| Accuracy | 30" | 10" | 7" | 5" | 5" | 2" |
| Minimum display | 30" | 5" or 10" | 5" or 10" | 1" or 10" | 5" or 10" | 1" |
| Vert tilt sensor | no | no | no | no | no | yes |
| Displays | 1 | 2 | 1 | 1 | 1 | 2 |
| RS232 | no | no | no | no | no | yes |
| Optical plummet | yes | yes | yes | no | yes | |
| Magnification | 3x | 3x | 2.2x | 2x | n/a | 4x |
| Field of view | 5 deg | 5 deg | 5 deg | +/- 15' | 5 deg | 5 deg |
| Focus | 0.5m plus | 0.5m plus | 1.3m | 0.5m plus | n/a | 0.5m plus |
| Laser plummet | no | no | no | yes | no | |
| Accuracy | n/a | n/a | n/a | n/a | +/- 8mm/1.5m | n/a |
| Laser spot | n/a | n/a | n/a | n/a | adjustable 1-2m | n/a |
| Tribrach | Fixed | Detachable | Detachable | Detachable | Shifting | Detachable |
| Level vials | ||||||
| Plate level | 60”/2mm | 30”/2mm | 40”/2mm | 30”/2mm | 30”/2mm | 30”/2mm |
| Circular vial | 8’/2mm | 8’/2mm | 10’/2mm | 8’/2mm | 8’/2mm | 8’/2mm |
| Telescope | ||||||
| Magnification | 30X | 30X | 30X | 30X | 30X | 30X |
| Length | 155mm | 155mm | - | 155mm | - | 155mm |
| Objective aperture | 45mm | 45mm | 45mm | 40mm | 42mm | 45mm |
| Min focus | 1.3m | 1.3m | 2m | "1m, 2m select" | 1.3m | |
| Field of view | 1 deg 30’ | 1 deg 30’ | 1 deg 20’ | 1 deg 20’ | 1 deg 20’ | 1 deg 30’ |
| Resolving power | 2.5” | 2.5” | 2.5” | 3.4” | 3.5” | |
| Stadia | 100:1 | 100:1 | 100:1 | 100:1 | 100:1 | 100:1 |
| Image | Erect | Erect | Erect | Erect | Erect | Erect |
| Power | Alkaline | Alkaline | Alkaline | Alkaline | Alkaline | Alkaline |
| CALIBRATION Once shipped from the manufacturer Accurate Instruments Optical and Electronic Service Centre calibrates instruments then fits them with the appropriate shockwatch, calibration sticker and test calibration certificate. Shockwatches indicate to the user whether the instrument has been dropped. |
| STANDARD PACKAGES The theodolite package consists of the instrument, carry case, batteries as per specification sheet, calibration sticker and test calibration certificate. Optional heavy duty aluminium or wooden tripods are available. |
Accurate Instruments
(NZ) Ltd. is a 100% New Zealand owned company.
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