A small circumferentor signed Harris 47 Holborn London, with two fixed sighting vanes, with two further vanes on rotating arm, the circle divided quadrantley - 4¼in diam; an oxidised brass drainage level signed J Davis Derby with sights and bubble level on stall mount in case; a trough compass in fitted case; a French octagonal surveyors cross; and a German artillery quadrant with Turkish markings in fitted case (5)