Topcon AT-B4 24X Automatic Level - 2110240B0

Topcon AT-B4 24x Auto Level w/HZ Circle
 
Product Description
  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
        AT-B2
        AT-B3
        AT-B4
      
      
        Length
        215mm (8.46 in.)
        215mm (8.46 in.)
        215mm (8.46 in.)
      
      
        Magnification
        32X
        28X
        24X
      
      
        Objective Aperture
        42mm (1.65 in.)
        36mm (1.42 in.)
        32mm (1.26 in.)
      
      
        Resolving Power
        3 in.
        3.5 in.
        4 in.
      
      
        Field of View
        1°20’
        1°25’
        1°25’ (at 100m/328ft.)
      
      
        (at 100m/328ft.)
        (2.3m/7.5 ft.)
        (2.5m/8.2 ft.)
        (2.5m/8.2 ft.)
      
      
        Min. Focus from end of telescope
        0.2m (7.9 in.)
        0.2m (7.9 in.)
        0.2m (7.9 in.)
      
      
        Min. Focus from instrument center
        0.3m (1 ft.)
        0.3m (1 ft.)
        0.3m (1 ft.)
      
      
        Image
        Erect
        Erect
        Erect
      
      
        Stadia Constant
        0
        0
        0
      
      
        Stadia Ratio
        100
        100
        100
      
      
        Focusing Knob
        2-speed
        1-speed
        1-speed
      
      
        Sighting Aid
        Peep Sight
        Gun Sight
        Gun Sight
      
      
        ACCURACY
        AT-B2
        AT-B3
        AT-B4
      
      
        Without Micrometer
        0.7mm (0.03 in.)
        1.5mm (0.06 in.)
        2.0mm (0.08 in.)
      
      
        With Micrometer
        0.5mm (0.02 in.)
        n/a
        n/a
      
      
        COMPENSATOR
        AT-B2
        AT-B3
        AT-B4
      
      
        Type
        Pendulum compensator with magnetic damping system
      
      
        Setting Accuracy
        0.3 in.
        0.5 in.
        0.5 in.
      
      
        Working Range
        ±15 ft.
        ±15ft.
        ±15 ft.
      
      
        CIRCULAR LEVEL
        AT-B2
        AT-B3
        AT-B4
      
      
        Sensitivity
        10 ft./2mm
        10 ft./2mm
        10 ft./2mm
      
      
        HORIZONTAL CIRCLE
        AT-B2
        AT-B3
        AT-B4
      
      
        Diameter
        103mm (4.1 in.)
        103mm (4.1 in.)
        103mm (4.1 in.)
      
      
        Minimum Division
        1°/1gon
        1°/1gon
        1°/1gon
      
      
        GENERAL
        AT-B2
        AT-B3
        AT-B4
      
      
        Water Resistance
        IPX6 (IEC 60529:2001)
      
      
        Operating Temperature
        -4°F to +122°F (-20ºC to +50ºC)
      
      
        Width
        5.12 in. (130mm)
        5.12 in. (130mm)
        5.12 in. (130mm)
      
      
        Length
        8.46 in. (215mm)
        8.46 in. (215mm)
        8.46 in. (215mm)
      
      
        Height
        5.51 in. (140mm)
        5.51 in. (140mm)
        5.31 in. (135mm)
      
      
        Weight
        4.1 lbs. (1.85kg)
        3.7 lbs. (1.7kg)
        3.7 lbs. (1.7kg)