Bidspirit auction | Set of 4 levelling instruments:

Set of 4 levelling instruments: two devices by R. Reiss Liebenwerda, numbers 10721 and 10806, black l - Set of 4 levelling instruments: two instruments by R. Reiss Liebenwerda, numbers 10721 and 10806, black-lacquered metal, on a black tripod, spirit levels, Leo Ross Berlin, beige-painted tube, black triangular tripod on a base plate, Trig Survey No. 1054 with spirit level on a round attachment, tube dimensions 24 cm, 25 cm, 23 cm, 13.5 cm; heights approx. 16.5 cm, 15.5 cm, 14 cm, 12 cm; paintwork worn, partly patchy; signs of wear; functionality not tested *3656/5142/002 (internal)