Japan Brand B40A Survey Auto Level Specialized Automatic Level Surveying Instrument

Product Detail

Model	B40A
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.)

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