Set of measuring instruments: - a perpetual sun ring, forming a pendant, in brown patina metal, bearing a year 1721 and the inscription "I O H S THON". Diameter: 3.3 cm. - a circular pocket sextant in brass and black patinated metal, signed TROUGHTON & SIMMS Ltd London, no. 3667 and dated 1918. Case numbered 3634. - a single-pan travel trebuchet scale, called a "pèse-guinée", in brass, signed JECKER in Paris, in its mahogany box. - two brass two-pan travel scales in wooden boxes. - a brass horizontal level, in its wooden box. - a compass case. - Two wooden or brass folding yardsticks. - a holosteric barometer, silver dial signed V. DONINELLI, Nice (oxidation), in its case. - a mini globe. H.: 6 cm. - two mini compasses in pendants. H.: 2.2 or 2.4 cm. - a compass for weights and measures, conversion of pounds into grams by G. CHAIX, Paris, chez A. PINSON & Cie. Diameter: 18 cm. Some wear; a few accidents to the boxes.