Высококачественный инструмент для измерения марки Sokkia автоматический уровень

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Hi-quality Surveying Instrument Sokkia Brand Auto Level B20/B30/B40

Model	B40	B30	B20
Telescope
Length	215mm(8.46 inch)
Objective aperture	32mm	36mm	42mm
Magnification	24X	28X	32X
Image	Erect
Resolving power	4"	3.5"	3.0"
Field of view(at 100m)	1° 25′ (2.5m)		1° 20′ (2.3m)
Minimum focussing distance	0.2m (7.9in.) from end of telescope
	0.3m (1ft.) from instrument cener.
Reticle pattern	Cross hairs		wedge
Stadia ratio	100
Stadia constant	0
sighting aid	Gun sight	Peep sight
Focusing Knob	1-speed		2-speed
Lense hood	-		Retractable
Accuracy(standard deviation for 1km double run leveling)
Without micrometer	2.0mm	1.5mm	0.7mm
	(0.08in.)	(0.06in.)	(0.03in.)
With micrometer			0.5mm
			(0.02in.)
Compensator
Type	pendulum compensator with magnetic damping system
Working range	± 15′
Setting accuracy	0.5"		0.3"
Horizontal Circle
Diameter	103mm (4.1in.)
Graduation	1°/1gon
General
Sensitivity of circular level	10′/2mm
Mirror for circular level	Plane mirror		pentaprism
Horizontal motion drive	Clampless, endless, double-sided knobs
Water resistance	IPX6(IEC60529)
Operating temperature	-20-+50°C (-4 to +122°F)
Size	122mm× 215mm× 135mm		130mm× 215mm× 140mm
Weight	1.7kg (3.7 lb.)		1.85kg (4.1 lb.)

0.0536 s.