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Waterpass - Auto Level Topcon

Waterpass - Auto Level Topcon

AT-B Series – Auto Level

Utilizing a finely tuned magnetic damping system, AT-B series automatic levels quickly level and stabilize the line of sight. These precision instruments ensure reliable leveling even when working near heavy equipment or busy highways where fine vibrations could be present. The automatic levels feature IPX6 protection against powerful water jets from all directions and are fully resistant to driving rain and splashing water. Horizontal angles can be directly read in 1º or 1gon units. Free rotation feature allows you to read any angle from zero. The circle is covered for protection against dirt and scratch. The readout window is located below the eyepiece for quick reading.

AT-B Series Features:

•    Durable, Dependable, High Value Auto Levels
•    3 Models - 32x, 28x, and 24x Magnifications
•    Rapid, Accurate, and Stable Automatic Compensation
•    Ultra-Short 20cm (7.9 in.) Focusing
•    All-Weather Dependability
•    Clampless, Endless Fine Horizontal Adjustments

 

Rapid, Stable, and Durable Compensator

The compensator of AT-B Series incorporates four suspension wires made of super-high-tensile metal that features minimal thermal expansion coefficient, providing unmatched durability and accuracy. Finely tuned magnetic damping system quickly levels and stabilizes the line of sight despite the fine vibrations present when working near heavy equipment or busy roadways.

Horizontal Circle for Angle Measurement

Horizontal angles can be directly read in 1º or 1gon units. Free rotation feature allows you to read any angle from zero. The circle is covered for protection against dirt and scratch. The readout window is located below the eyepiece for quick reading.

20cm (7.9 in.) - Ultra-Short Minimum Focus

The AT-B Series can focus on objects at 20cm (7.9 in.) in front of the telescope. This feature dramatically facilitates the works in confined spaces.

 

 

TELESCOPE
Length

AT-B2
215mm (8.46 in.)

AT-B3
215mm (8.46 in.)

AT-B4
215mm (8.46 in.)

Magnification

 

AT-B2
32X

AT-B3
28X

AT-B4
24X

Objective Aperture

 

AT-B2
42mm (1.65 in.)

AT-B3
36mm (1.42 in.)

AT-B4
32mm (1.26 in.)

Resolving Power

 

AT-B2
3 in.

AT-B3
3.5 in.

AT-B4
4 in.

Field of View

AT-B2
1°20’

AT-B3
1°25’

AT-B4
1°25’ (at 100m/328ft.)

(at 100m/328ft.)

AT-B2
(2.3m/7.5 ft.)

AT-B3
(2.5m/8.2 ft.)

AT-B4
(2.5m/8.2 ft.)

Min. Focus from end of telescope

AT-B2
0.2m (7.9 in.)

AT-B3
0.2m (7.9 in.)

AT-B4
0.2m (7.9 in.)

Min. Focus from instrument center

AT-B2
0.3m (1 ft.)

AT-B3
0.3m (1 ft.)

AT-B4
0.3m (1 ft.)

Image

AT-B2
Erect

AT-B3
Erect

AT-B4
Erect

Stadia Constant

AT-B2
0

AT-B3
0

AT-B4
0

Stadia Ratio

AT-B2
100

AT-B3
100

AT-B4
100

Focusing Knob

AT-B2
2-speed

AT-B3
1-speed

AT-B4
1-speed

Sighting Aid

AT-B2
Peep Sight

AT-B3
Gun Sight

AT-B4
Gun Sight

ACCURACY
Without Micrometer

AT-B2
0.7mm (0.03 in.)


AT-B3
1.5mm (0.06 in.)


AT-B4
2.0mm (0.08 in.)

With Micrometer

AT-B2
0.5mm (0.02 in.)


AT-B3
n/a


AT-B4
n/a

COMPENSATOR
Type Pendulum compensator with magnetic damping system
Setting Accuracy

AT-B2
0.3 in.


AT-B3
0.5 in.


AT-B4
0.5 in.

Working Range

AT-B2
±15 ft.


AT-B3
±15ft.


AT-B4
±15 ft.

CIRCULAR LEVEL
Sensitivity

AT-B2
10 ft./2mm


AT-B3
10 ft./2mm


AT-B4
10 ft./2mm

HORIZONTAL CIRCLE
Diameter

AT-B2
103mm (4.1 in.)


AT-B3
103mm (4.1 in.)


AT-B4
103mm (4.1 in.)

Minimum Division

AT-B2
1°/1gon


AT-B3
1°/1gon


AT-B4
1°/1gon

GENERAL
Water Resistance IPX6 (IEC 60529:2001)
Operating Temperature -4°F to +122°F (-20ºC to +50ºC)
Width

AT-B2
5.12 in. (130mm)


AT-B3
5.12 in. (130mm)

AT-B4
5.12 in. (130mm)

Length

AT-B2
8.46 in. (215mm)


AT-B3
8.46 in. (215mm)


AT-B4
8.46 in. (215mm)

Height

AT-B2
5.51 in. (140mm)


AT-B3
5.51 in. (140mm)


AT-B4
5.31 in. (135mm)

Weight

AT-B2
4.1 lbs. (1.85kg)


AT-B3
3.7 lbs. (1.7kg)


AT-B4
3.7 lbs. (1.7kg)


 



Newsflash

Dalam melakukan pengukuran kemungkinan terjadi kesalahan pastilah ada, dimana sumber kesalahan atau permasalahan tersebut, antara lain :

a. Kesalahan yang bersumber dari pengukur
b. Kesalahan yang bersumber dari alat
c. Kesalahan yang bersumber dari alam.