A French pattern surveying water level, the brass instrument unsigned, in case - 23 7/8in wide; a mahogany and brass road gradient clinometer signed Cattam & Hallen 2 Winsley Strt London, with sights, quadrant and axis for stand - 55in.long; and a planimeter by Keuffel & Esser in case - 9 1/8in.wide (3)