23 April 2008,
London, South Kensington
Price Realised GBP 2,750
A rare Italian 17th-century brass protractor-square
by Giacomo Lusverg (c. 1636-1689), dated 1688
the degrees divided to 0°30', numbered by 10°, 0°-140° on the protractor then 140°-180° on the square, inner non-linear scale numbered by 1, 3-12 on the inside of the protractor, both sides of the square carrying scales, the reverse decorated with engraved foliage and green-man, signed Iacobus Lusuerg Faciebat Romæ 1686.
4½in. (11.5cm.) long
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Giacomo Lusuerg established himself as an instrument-maker in Modena, later moving to Rome, where he lived and worked from 1672 until his death in 1689 and manufactured 'very fine surveying and astronomical instruments' (J. Bennett The Divided Circle (Oxford: 1987), p. 77).
No VAT will be charged on the hammer price, but VAT at 15% will be added to the buyer's premium which is invoiced on a VAT inclusive basis.
Sale, Christie's South Kensington, 27 September 1990, lot 246.