Automatic Construction Level 20x, 2.5 mm per km Double Run - Leica NA320

Transferring levels on site costs time when the instrument has to be readjusted after every setup. The NA320 automatic level from Leica Geosystems levels the line of sight by itself through an air damped compensator with a working range of ±15 arc minutes, setting accuracy is better than 0.5 arc seconds. Once the circular bubble is roughly centred the instrument is ready to read.

Benefits

• Standard deviation of 2.5 mm per kilometre double run levelling to ISO 17123-2, enough for excavation, foundations and site survey in building construction.
• 20x magnification with a 36 mm objective aperture, the staff stays clearly readable at medium sighting distances.
• Shortest target distance below 1.0 m from the instrument axis, so narrow trenches and interiors can still be measured.
• Multiplication factor 100, the distance to the staff is read straight off the stadia lines without a separate tape.
• IP54 protection to IEC 60529 against dust and splash water, operating temperature from -20 °C to +40 °C.
• Horizontal circle graduated 360 degrees in 1 degree steps for simple angle setting out without a second instrument.

Technical data

Applications

Transferring levels in the shell, marking datum lines and checking formwork heights. Excavation and trench work where invert levels are verified continuously. Road and path construction with longitudinal and cross sections. Site survey and simple setting out via the horizontal circle. Interior work, where the short target distance below 1.0 m allows measurement in tight rooms.

Compatibility and scope of delivery

The NA320 works with standard levelling staffs and mounts on common construction and survey tripods via the 5/8 inch thread. The delivery consists of the NA320 automatic level, the carrying case, the user manual on CD in 29 languages, an Allen key, a bent pick and the customer information. Tripod and levelling staff are not included.

Standards, origin and identification

The accuracy figure follows ISO 17123-2 for levels, the protection class is tested to IEC 60529. Original Leica Geosystems instrument, country of origin China, customs tariff number 9015301000, EAN 7640110695968. The instrument is purely optical and contains no battery.