Precision Level 30x, IP57 and 0.7 mm per km Double Run - Leica NA730 plus

Settlement monitoring and precision levelling break down in two places, at the compensator setting accuracy and at the readability of the staff. The NA730 plus automatic level from Leica Geosystems addresses both, the compensator sets the line of sight to better than 0.3 arc seconds and the telescope magnifies 30 times. The result is a standard deviation of 0.7 mm per kilometre double run and 0.4 mm for a single measurement at 30 m.

Benefits

• 0.7 mm per kilometre double run, more than three times tighter than the NA720 and enough for settlement monitoring and precision levelling in civil engineering.
• Compensator setting accuracy better than 0.3 arc seconds, the line of sight settles quickly and stays stable under light tripod vibration.
• 30x magnification, the staff graduation stays interpolable over long sights and through shimmering air.
• IP57 rating, dust tight and protected against temporary immersion, plus a nitrogen filled telescope with no internal fogging.
• Double sided endless fine drive and a horizontal circle in 360 degrees and 400 gon, the instrument adapts to the drawing rather than the other way round.
• Shortest target distance of 0.7 m, cramped setup positions remain usable.

Technical data

Applications

Settlement monitoring on structures, bridges and retaining walls. Precision levelling in civil and plant engineering. Aligning machine foundations and crane rails. Handover surveys on floor slabs and screed where millimetre tolerances are agreed. Long levelling runs in road and track construction. Use on wet sites where a precision instrument would otherwise stay in its case.

Compatibility and scope of delivery

The NA730 plus mounts on common construction and survey tripods via the 5/8 inch thread. Full accuracy also needs a rigid levelling staff with checked graduation and a stable wooden or aluminium tripod, for precision levelling a staff with millimetre graduation and a staff support. The delivery consists of the NA730 plus automatic level, the carrying case, the user manual on CD, an Allen key and a rain protection cover. Tripod and levelling staff are not included.

Standards, origin and identification

The protection class is tested to IEC 60529, level accuracy is determined to ISO 17123-2. Original Leica Geosystems instrument, country of origin China, customs tariff number 9015301000, EAN 7640110695708. The instrument is purely optical and contains no battery.