Rich set of diagrams and technical drawings of apparatus including -Orthodometer Fournier, cut and top view, on blue paper, dated Paris on 27 October 1884, stamp date "Maison Breguet 30-10-84", on the back numbered 51G, stamp "the director of the workshops" and signature (Millars?) ; 65.5 x 99 cm -Chronograph of Mr. Flowery, coloured, dated June 1875 and numbered 10A -Chronograph of Mr. Fleuries, on layer, dated June 1875 and numbered 10A -Movement of pendulum on the Breguet dial, numbered 46A and 39C -Copy of a dial on blue paper Stretching, folding and tearing, various papers