Measuring rod GR 240, For all measurements of floor heights, Robust, high-quality aluminium profile, Extendible up to 2.4 m, For use even under extreme conditions, Appropriate for GLL 2 GLL 3-80 P GLL 2-80 P GLL 2-50 GRL 400 H GRL 300 HV GRL 300 HVG BL 200 GC GOL 20 G/D GOL 26 G/D Professional