AT Series Automatic Level / Digital Level

An automatic level is an optical instrument used to establish or verify points in the same horizontal plane. It is used in surveying and building with a vertical staff to measure height differences and to transfer, measure and set heights.

The level instrument is set up on a tripod and, depending on the type, either roughly or accurately set to a leveled condition using footscrews (leveling screws). The operator looks through the eyepiece of the telescope while an assistant holds a tape measure or graduated staff vertical at the point under measurement. The instrument and staff are used to gather and/or transfer elevations (levels) during site surveys or building construction. Measurement generally starts from a benchmark with a known height determined by a previous survey, or an arbitrary point with an assumed height.

Digital automatic levels are precise instruments used for precise leveling. The operation of digital levels is based on the digital processing of video indications of a coded staff. At the beginning of the measurement, a visual pointing of the instrument into the surface of leveling meter is performed. After that, the instrument automatically points the focus of its optical system on the surface of the meter and then a rough correlation calculation is performed followed by the precise correlation. According to the data received in the processor of the instrument, an exact distance from the axes of the instrument to the surface of the level meter is calculated