Clinograph for indicating the angles of boreholes, designed by E.F. McGeorge, 1883. Plus six glass tubes, five of which contain liquid in tube holder, and dispensing pot. Clinograph, British, 1883 1883
Tube holder for 7 glass tubes, for Clinograph for indicating the angles of boreholes, designed by E.F. McGeorge, 1883. Six are in place, five of which contain an unknown liquid. Tube holder for clinograph clinometer, British, 1883 1883