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Review title: Imprecise & Drifts Off Level
Product review: The levelling knobs have slop or dead zones when adjusting the bubbles. The beam was at least 1/4-inch wide causing a 'hysteresis' affect when approaching opposite sides of the beam, giving two different level-lines (which must be averaged). The instrument appears to drift significantly off level in outdoor use. When outdoors, changing temperatures and/or sun angles require checking and adjusting the level vials frequently. Recommend a better quality self-compensating instrument.
