Pentax ETH-502 Electronic Theodolite - 2" Accuracy
Key Features include
· Large easy to read-display
· Zero set and reverse angle display
· A row of soft keys allows simple and fast operation.
· A large display (LCD) is incorporated on both sides of the instrument. Both vertical and horizontal angles are displayed in degrees or gons.
· All the models have a bright 30x magnification telescope which ensures sharp and clear images even in poor light conditions.
· Clockwise and counter-clockwise angle measurement
· Conversion of the vertical angle to a percentage grade
· Zero setting of the horizontal angle at any position
· Horizontal angle 'Hold key function
· Clockwise and counter-clockwise angle measurement
· Conversion of the vertical angle to a percentage grade
· Zero setting of the horizontal angle at any position
· Horizontal angle 'Hold key function
· Powered by Alkaline batteries
Applications
· Setting out right angles and checking plumb
· Alignment measurements
· Anchor bolt layout
· 90° layout
| Electronic Theodolites ETH-500 |
Series Specification |
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| Model |
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ETH-502 |
ETH-505 |
ETH-510 |
ETH-520 |
| Telescope |
Imaging |
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Erect image |
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Objective aperture |
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45 mm |
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Magnification |
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30 x |
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Resolution |
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≤ 3" |
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Field of view |
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1° 20' |
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Shortest focusing distance |
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1.35 m |
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Stadia multiplication constant |
|
100 |
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Stadia addition constant |
|
0 |
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| Angle Measuring |
Angle measuring mode |
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Absolute encoder |
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Angle measuring accuracy |
2" |
5" |
10" |
20" |
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Angle display |
1"/5" |
1"/5" |
5"/10" |
10"/20" |
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Angle unit |
|
360°/400G |
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|
| Compensator |
Tilt sensor |
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Automatic vertical compensation |
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Tilt compensator |
Yes |
Yes |
No |
No |
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Soft switch |
ON/OFF |
ON/OFF |
- - |
- - |
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Compensation range |
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± 3' |
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| Display unit |
Two-sided |
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Two-sided |
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| Optical plummet Image |
Erect |
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Erect |
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Magnification |
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3 x |
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Angle of vision |
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3° |
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Focusing range |
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0.5 m ~ ∞ |
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Sensitivity of tubular vial mm |
30"/2 |
30"/2 |
40"/2 mm |
40"/2 mm |
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Sensitivity of circular vial |
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8'/2 mm |
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| Dust & Water Protection |
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IP44 |
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| Type of base |
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Detachable |
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| Power supply |
Battery |
|
4 x single three (AAA) type dry battery |
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| Ambient temperature |
For operation |
|
-20°C - +50°C |
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| Weight |
Instrument |
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4.5 kg |
|
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| Measurements |
Carrying case |
|
1.9 kg |
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Instrument |
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W 175 mm x L 170 mm x H 334 mm |
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Carrying case |
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W 330 mm x L 450 mm x H 220 mm |
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