Other Archives - Page 8 of 22

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A metacarpal bone saw with an ebony handle of c. 1800. The saw is slightly decorated with curled steel towards the handle. The saw can be tensioned by a screw of which the handle is nicely decorated in a circle. Dimensions: 6,3 x 21 cm. Find out more on www.vanleestantiques.com Read More...

31 Jul

Metacarpal bone saw c. 1800

By Van Leest Antiques

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A metacarpal bone saw of circa 1800 with an ebony octagonal handle ending in a sphere. The steel of the saw is slightly decorated by curls towards the handle. The blade of this saw is broken. The saw can be tensioned by a screw of which the handle is nicely decorated in a circle. Dimensions: 9,4 x 27 cm. Find out more on www.vanleestantiques.com Read More...

24 Jul

Cranial trephine by Sabatneck of Vienna, 19th century

By Van Leest Antiques

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A 19th century Cranial trephine by Sabatneck of Vienna. Trephines are circular saws for removing a disk of bone from the cranium or skull. Down the central shaft is a pin for engaging the instrument in the skull. When engaged it is rotated by an ebony handle. Made of steel and ebony wood, signed ‘Sabatneck Wien’. Dimensions: 8,5 x 17,5 cm. Find out more on www.vanleestantiques.com Read More...

23 Jul

Abel Foullon’s description of his holometer

By Landmarks of Science

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FULLONE [FOULLON}, Abel. Descrittione et Uso Dell’Holometro. Per saper misurare tutte le cose, che si possono veder coll’occhio cosi in lunghezza, & larghezza; come in altezza, & profondita. Venice: Giordano Ziletti, 1564. First Italian edition of this work on the holometer and its use, first published in French in 1555. Abel Fullon (1513-1563/1565) was Director of the Mint for Henry II of France and also succeeded Leonardo da Vinci as engineer to the king of France. His holometer was an Read More...

15 Jul

Continental Coin Scales

By Fletcher

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A set of continental coin scales with 28 brass weights, four missing, in chamois leather lined case Read More...

05 Jul

Traverse Board – Skandinavian, ca. 1800

By Archipel

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The traverse board was used to make dead reckoning. The circular part has 32 compass points with eight holes on each point. In the middle are eight cords secured with little pins. The pins are made of copper. The cardinal regions are marked N, NO, O, SO, S, SV, W, NV. The incorrectly indicated SV was later corrected. During the watch at sea, the sailed course was recorded every half hour by placing a pin on the sailed course Read More...

15 Jun

Inductive Repulsion apparatus after Elihu Thomson, C 1890

By Van Leest Antiques

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Inductive Repulsion apparatus after Elihu Thomson with a brass protective cover for the composite metal core and two brass rings.. Found in the (English) Max Kohl catalogue and a description could be found: ‘The Elihu Thomson device proves the repelling action of a Magnetic Field, generated by A. C., on good conducting metal masses. Wood Frame with Ring, the latter suspended on fibres, Fig. G. the magnet core is lifted as far as possible out of the magnetizing coil, the Read More...

12 Jun

Van Baalen globe ca. 1910

By Van Leest Antiques

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C.L. Van Balen 4 inch (10 cm) Terrestrial Globe on a tin-plate stand, 1910. Published by J. B. Wolters in Groningen, 12 lithographed and colored paper gores on cardboard sphere, lithographed tin stand and horizon. In good condition. Height 14,5 cm. Find out more on www.vanleestantiques.com Read More...

09 Jun

Cavalieri anticipates Newton’s reflecting telescope as well as the Cassegrain reflector

By Landmarks of Science

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CAVALIERI, Bonaventura. Lo Specchio Ustorio overo trattato delle settioni coniche, el alcuni loro mirabili effetti intorno al lume, caldo, freddo, suono, e moto ancora … Bologna: Clemente Ferroni, 1632. First edition, rare, of Cavalieri’s highly important treatise on conic sections and their applications in optics, acoustics and, perhaps most significantly, mechanics. Its importance in the history of the telescope is well-known: “Cavalieri’s design may well have been in all the essentials a direct anticipation of Newton’s reflecting telescope. Clearer and Read More...

07 Jun

Three rare works, including Egnazio Danti’s schematization of mathematics and a paper instrument for calculating right ascension

By Landmarks of Science

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DANTI, Egnazio. Le scienze matematiche ridotte in tavole. Bologna: la Compagnia della Stampa, 1577. [Bound with:] CHIABRANDI, Francesco. Descrizione ed uso d’una Tavoletta più comoda, ed accurata del Globo Celeste pe’ problemi d’Ascension Retta. Piacenza: G. Tedeschi, 1781. [Bound with:] Anon. Saggio Cronologico d’Autore Anonimo. Parte I. Milan: Francesco Pogliani, 1785. A remarkable sammelband of three very rare works, all in first edition. It opens with Danti’s schematization of the sciences, beginning with mathematics and moving on to astronomy (Ptolemaic, but Read More...

07 Jun

Adriaan Metius, the first Dutch work on the proportional compass, 1634

By Landmarks of Science

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METIUS, Adriaan. Manuale arithmetice et geometrie practice in het welcke beneffens de stock-rekeninghe ofte rabdologia J. Nepperi, cortelick ende duydelic t’gene den landmeters ende ingenieurs, nopende ‘t landmeten ende sterkte-bouwen nootwendich is, wort geleert ende exemplaerlick aengewesen door A. A. Metius op een nieu verrijckt met nieuwe inventie om alle ronde vaten hare wannigheden af te pegelen. Amsterdam: Hendrick Laurensz, 1634 First edition, the more important second issue (see below), of this very rare Dutch manual of arithmetic, surveying and Read More...

06 Jun

Boscovich’s account of his vitrometer, 1767

By Landmarks of Science

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BOSCOVICH, Roger Joseph. De recentibus compertis pertinentibus ad perficiendam dioptricam, pp. 169-235 and 2 plates in: De Bononiensi Scientiarum et Artium Instituto atque Academia, Commentarii, Vol. V, Pars Prima. [With:] De unione colorum aliorum post alios per binas substantias, ac unione multo majore per tres, pp. 265-333 and one plate in Ibid., Vol. V, Pars Altera. Bologna: Typis Laelii et Vulpe, 1767 First edition, in two complete journal volumes, of Boscovich’s invention of the vitrometer. “In this dissertation, [De recentibus] Read More...