Sokkia B40 Automatic Level
World-Proven Precision and Durability
Sokkia B series automatic levels feature enhanced reliability under all environmental conditions.
  Tough and compact bodies are more tightly sealed against water, humidity and dust (IPx6).
  The B series levels provide quick setup, easy sighting, and superior durability against vibration
  and shock, ensuring the increased productivity over an extra-long period of time.
Features:
Rapid, Easy Setup
A domed-head tripod makes setting
up faster and easier even on inclined,
uneven grounds. The B series levels also fit flat-head tripods. The circular level can be seen on a pentaprism or plane mirror located beside the telescope eyepiece.
Superior Telescope
Optimally designed telescope provides exceptionally bright and sharp
view that reduces operator’s eye strain. Ultra-short focus distance of
20cm (7.9in.) from end of telescope* makes it easiest to use in confined
locations. Two-speed focus knob switches between coarse and fine for
even faster operation (B20).
Quick Collimation
Two knobs of endless horizontal motion drives can be operated with
either hand for fast and easy aiming.
Horizontal Angle Measurement
Horizontal angles can be read in 1° or1gon units. Freely rotatable circle allows any angle reading from zero. Right angles can be quickly set for layout and alignment tasks. The readout window is conveniently located on the instrument base – directly below the eyepiece. 
Precise, Reliable Automatic Compensator
The B series levels incorporate the most precise and reliable compensator available in the market today. The technological superiority of the Sokkia automatic levels has been proven since the release for the best-selling B2 model in 1963. Four superior-high tensile suspension wires and magnetic damping system ensure accuracy and stability even when exposed to temperature changes, vibrations, or shock.