Máy kinh vĩ điện tử Pentax ETH-302
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Chi tiết sản phẩm Máy kinh vĩ điện tử Pentax ETH-302
The ETH-300 Series features model numbers that reflect angle accuracy and have comm on features. All models have dual displays, and a detachable tribrach.
Horizontal and vertical angles can be observed simultaneously on the large 2 line, back-lit LCD displays, and vertical angles can be easily converted to percent slope with one key stroke. Other standard features include a horizontal angle zero set, automatic power off to conserve batteries, and a battery life indicator on the LCD display. Four AA alkaline batteries provide 25 - 28 hours of continuous operation.
ETH-320 Detachable tribrachTelescope Magnigication30 X Objective aperture45 mm Resolving Power3? Field of view1? 30? Minimum Focusing Distinace1.35 m Stadia constant0 Focusing2 speed Angle Measurement TypeIncremental Reading System VerticalSingle HorizontalDual Minimum Display20?
( 10/20 selectable ) Accuracy ( DIN 18723 )20?Display Typedot matrix LCD DisplayPanel 2 side Key PanelEnglish + OthersVertical axis singleaxis Water Resistantance JIS Class 4Sensitivity of Vials Plate Vial30? / 2mm 40? / 2mm CircularVial 8? / 2mm Warning Buzzer YesOptical Plummet Telescope Magnification3 X Focus Range0.5m - ?Data Comm unication NAPower Source Type4xAA Dry Battery Operation TimeAlkaline 25 6 28 hrs / ( NiMH 25 - 28 hrs )Ambient Temperature -10 - +50 ?CSize& weight SiseW166 x 329 x 155mm weight 4.6kg
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