
ETH-300 Series Electronic Theodolite Pentax
Building the future
The new ETH-300 series reflect angle accuracy and have an easy to see Pentax red side for safety and recognition.There are 4 models in the range providing a choice of 2”(0.001G),5”(0.001G), 10”(0.002G) or 20”(0.005G) accuracy.
Applications
• Setting out right angles and checking plumb
• Alignment measurements
• Anchor bolt layout
• 90°layout
Key Features include:
• Easy to read-display
• Zero set and reverse angle display
• Powered by Alkaline batteries
Easy to read-display
A 16 characters x 2 line liquid crystal display (LCD) is incorporated on both sides of the instrument. Both vertical and horizontal angles are displayed in degrees or gon.
Easy key operation
A row of soft keys allows simple and fast operation
Easy to use
• Lightweight and compact
• The basic instrument weighs only 4.6 kg or 10 lbs. 2 oz. (including battery)
Automatic power-off function
Automatic power-off prevents unnecessary battery drainage. The remaining battery capacity is indicated on the display.
Angle measurement and Angle control
• 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
Bright optics
All the models have a bright 30x magnification telescope which ensures sharp and clear images even in poor light conditions.
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ETH-300 Series |
ETH-302 |
ETH-305 |
ETH-310 |
ETH-320 |
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Telescope |
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Magnigication |
30 x |
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Objective aperture |
45 mm |
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Resolving Power |
3” |
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Field of view |
1°30’ |
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Minimum Focusing Distance |
1.35 m |
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Stadia ratio |
100 |
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Stadia constant |
0 |
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Focusing |
2 Speed |
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Angle Measurement |
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Type |
Incremental |
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Reading System |
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Vertical |
Single |
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Horizontal |
Dual |
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Minimum Display |
5”/ 1 mgon |
5”/ 1 mgon |
10”/ 2 mgon |
20”/ 5 mgon |
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(1”/5”selectable) |
(1”/5”selectable) |
(5”/10”selectable) |
(10”/20”selectable) |
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Accuracy (DIN1 8723) |
2”/ 0.6 mgon |
5”/ 1.5 mgon |
10”/ 3 mgon |
20”/ 6 mgon |
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Unit of Angle |
360°/ 400 g / 6400 MIL |
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Display |
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Type |
dot matrix LCD |
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Display Panel |
2 sides |
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Key Panel |
English |
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ETH-300 Series |
ETH-302 |
ETH-305 |
ETH-310 |
ETH-320 |
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Vertical axis |
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single axis |
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Compensator |
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Yes |
No |
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Water Resistance |
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IPX 4 |
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Sensitivity of Vials |
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Plate Vial |
30”/ 2 mm |
40”/ 2 mm |
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Circular Vial |
8’/ 2 mm |
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Warning Buzzer |
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YES |
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Optical Plummet Telesc. |
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Magnification |
3 x |
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Focus Range |
0.5 m ~ ∞ |
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Power Source |
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Type |
4 x AA Dry Battery |
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Operation Time |
Alkaline 30 hrs./ (NiMH 15 hrs) |
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Ambient Temperature |
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-20°C - + 50°C |
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Size and Weight |
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Body |
W 168 x H 330 x L 158 mm |
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Weight |
4.6 kg / 10 lbs.2 oz |
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