This is a PENTAX electronic theodolite instruction manual
This manual provides instructions for the Pentax ETH-205, ETH-210, and ETH-220 series electronic theodolites. It covers safety precautions, standard equipment, and the nomenclature of parts including the optical sight, LCD panel, and leveling screws. The guide details battery insertion procedures and key operations for power management and angle measurement.
| Magnification | 30x |
|---|---|
| Effective aperture | 40 mm |
| Resolving power | 3.5" |
| Minimum focus distance | 2.0m |
| Power source | 5 x AA dry battery |
| Ambient temperature | -20° C~ +45° C |
| Water protection | IPX2 |
The minimum display for the ETH-210 is 5", 10", or 20".
The operation time is 15 hours when using alkaline batteries.
The power supply is turned off automatically if no key is operated for 10 minutes.