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Merk :survey Waterpass Sokkia B20 Deskripsi :
B20 B30 B40 Automatic Levels
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Model
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B20
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B30
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B40
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Telescope
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magnification
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32x
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28x
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24x
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Objective aperture
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42mm (1.7in.)
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36mm (1.4in.)
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32mm (1.3in.)
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Minimum focus
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0.2m (7.9in.) from end of telescope,
0.3m (1.0ft.) from instrument center
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Accuracy*
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Without micrometer
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0.7mm (0.03in.)
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1.5mm (0.06in.)
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2.0mm (0.08in.)
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With micrometer
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0.5mm (0.02in.)
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-
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Compensator
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Type
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4 wire pendulum compensator with magnetic damping system
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Working range
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±15'
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Water protection
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IPX6 (IEC60529)
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Horizontal circle graduation
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1º (1gon)
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Weight
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1.85kg (4.1lb.)
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1.7kg (3.7lb.)
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* Standard deviation for 1km double-run leveling.
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