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A rare Jesse Ramsden-type Dividing Engine, English, dated 1830,signed Made by William Rothwell Bacup Lancashire Anno 1830, the 24-inch diameter b...
A gilt brass vertical plate dial, French, circa 1700,not signed, the plate of the instrument is composed of two triangles, the lower being apparen...
A gold pocket compass/love token,London, 1806, full hunter gold case, hallmarked L 18, both sides engraved with wreaths, motto 'Sed No Sine Gloria...
A Cary Presentation Brass Box Sextant, English, circa 1860,signed Cary, London, Brass body with sliding shutter sight and dark lens, wheeled rack ...
An Edmund Culpeper compound monocular microscope, English, circa 1730,signed on the printed trade label E Culpeper Sculp. London, with ebonised...
A Macquart octagonal silver inclining dial, French, early 18th century,signed Macquart A Paris, the octagonal dial with inclining dial plate and f...
A silver and gilt brass perpetual calendar, German, early 18th century,a three disc calendar with outer two gilt and pieced discs to display the i...
A Rare Henry Sutton Horary Quadrant, English, circa 1755,printed Latitude 51 32 Henricus Sutton Londini 1658 New Stile, the wooden quadrant app...
A rare Ralph Gout gilt brass horse-rider's pedometer watch, English, circa 1800,inscribed Bo the Kings letters, Ralph Gout, London, No.221, the wa...
A large Thomas Blunt brass universal equinoctial ring dial, English, circa 1770,signed T Blunt London, made for use in both hemispheres, hours div...
A Nathanaell Heighemore brass Gunter's quadrant, English, dated 1633,signed Nathanaell Heighemore A.D. 1633, the quadrant mounted with pin-hole si...
A brass nocturnal, probably German, 16th century,all numbers and letters punch marked, nocturnal with notches for hours to enable to be counted at...
A small John Checkley brass Gunter quadrant, English, dated 1691,signed John Checkley Fecit, also engraved Thomas Burton 1691 Living in Everdon f...
A folding brass analemmatic sundial, English, circa 1700,attributed to Thomas Tuttell, north dial with ornately decorated and folding gnomon, hour...
A Franz Antoni Knitl mechanically assisted string gnomon dial, Austrian, early 18th century,signed Franz Antoni Knitl fecit Linz, rectangular bras...
A Johann Martin silvered and gilt brass universal equinoctial dial, Augsburg, circa 1700,signed Johann Martin In Augsburg, octagonal dial with ins...
A gilt brass and silver portable sundial, probably German, mid-18th century,the circular dial with inset silvered compass rose, hinged gnomon moun...
A J.L. Bizot silver and gilt brass Butterfield-type dial, French, dated 1708,signed J Bizot A Paris, 1708, the octagonal dial with three chapter r...
A James Search brass compass sundial, English, circa 1775,signed J Search London, the circular dial with silvered compass rose and chapter ring, s...
A large bronze horizontal sundial, English, dated 1787,signed MADE BY Lord Colvill, the well engraved octagonal dial bearing the arms of George Lo...
A rare John Miller 3-inch pocket globe, Scottish, published 1793,cartouche printed A NEW GLOBE of the Earth By John Miller Mathematical Instrument...
A large Thomas Wright double sided gunner's quadrant, English, circa 1730,signed Made by Tho Wright, Instrument Maker to his MAJESTY, the brass ...
A Rare Medieval Brass Astrolabe, Probably Italian, Late 13th/Early 14th Century, CCA 4556. Rete The fully symmetrical strapwork is arranged aroun...
A 2 ¾-inch terrestrial pocket globe after Herman Moll, English, circa 1775,the rectangular cartouche inscribed A Correct Globe With The New Disco...
A Ross Wenham's brass compound binocular microscope, English, circa 1870,signed ROSS, LONDON, 4006, the tube additionally signed Wenham's binocula...
A fine silver and gilt brass nocturnal, German, late 17th century,possibly by Johann Wolfgang Hager (1645-1705), the nocturnal side shows hours 4-...
A James Simons silvered brass portable sundial and perpetual calendar, English, circa 1780,signed J Simons London, circular sundial with hour scal...
An miniature silver pocket sundial in pair case, probably English, late 17th century,the oval dial, lacking gnomon, with inset compass and hour sc...
A Jean Nourry silver and gilt brass miniature octagonal sundial, French, dated 1674,signed Nourry A Lion, 1674, the octagonal dial with engraved I...
A silver Butterfield dial and gilt brass Blondeau Regiomontanus dial set, French, early 18th cen...
A silver Butterfield dial and gilt brass Blondeau Regiomontanus dial set, French, early 18th century,the octagonal silver Butterfield dial signed ...
A gilt brass Butterfield dial, French, late 17th century,signed Butterfield A Paris, the unusual rectangular form of Butterfield dial, with inset ...
A Culpeper-type brass monocular microscope attributed to George Sterrop, English, mid-18th century,
A Culpeper-type brass monocular microscope attributed to George Sterrop, English, mid-18th century,the unsigned brass draw tube on elaborately sha...
A boxwood Gunter rule, English, 18th century,the 24-inch rule with inset brass compass points, one side engraved the natural lines of chords, sine...
A fine Timothee Collet silver and gilt brass portable sundial, French, dated 1663,signed Timothee Collet A Paris, 1663, the octagonal dial with in...
A brass Butterfield-type sundial, English, mid-18th century,the oval dial with two chapter rings with Arabic and Roman numerals for latitudes 51 d...
A rare Thomas Heath gilt brass Butterfield-type dial, English, mid-18th century,signed T Heath Fecit, the unusual figure of eight shaped dial eng...
A Michel Cadot brass Butterfield-type dial, French, dated 1742,signed Cadot A Paris, 1742, the octagonal dial with three chapter rings for 40, 45 ...
A Gottfried Reiff painted wood pillar dial, Nuremburg, mid-18th century,signed in manuscript Gottfried Reiff fec Nurib., turned wood pillar with r...
A Francois De Laistre brass Butterfield-type sundial, French, circa 1700,signed Francois De Laistre A Paris, the oval dial with three chapter ring...
An attractive carved fruitwood horodictical quadrant, possibly French or Swiss, dated 1725,engraved FAIT LE 19 AVRIL MDCCXXV P I MAYNADIE, with in...
A small silver, silver-gilt and rock crystal compass sundial, Central Europe, late 16th century,
A small silver, silver-gilt and rock crystal compass sundial, Central Europe, late 16th century,the octagonal case in rock crystal with hinged gil...
A J. Stammer gilt brass universal equinoctial ring dial, German, circa 1700,signed J STAMMER SACROW, outer ring gilt brass and inner ring with tra...
A gilt and silvered brass altitude sun dial, probably Italian, mid-17th century,the disc-shaped dial with two curved hour scales, folding pin gnom...
A David Beringer bone-mounted cube dial, German, early 19th century,signed D BERINGER, the five dials with shaped gnomons, (one missing), on turne...
A brass universal equinoctial ring dial, English, early 18th century,double pin-hole gnomon sliding over calendar and zodiacal scales, outer ring ...
A fine gilt and silvered brass diptych dial, probably German, dated 1643,signed with initials S.A.V.Z. Ano.1643, the unusual construction with ext...
The Important Regiomontanus/Cardinal Bessarion Astrolabe, dated 1462, CCA 640, A brass European astrolabe inscribed on the back plate 'SVB DIVI ...
A rare silvered and gilt brass Regiomontanus sundial and perpetual calendar, probably German, ci...
A rare silvered and gilt brass Regiomontanus sundial and perpetual calendar, probably German, circa 1700,the silvered brass plate mounted with pin...
An unusual heart-shaped brass vertical altitude dial, early 17th century,engraved for latitude 52, the obverse engraved for the summer months sho...
A brass altitude ring dial, probably German, late 16th century,the circular ring with sliding gnomon band, suspension loop and stepped hour scale,...
A miniature brass mounted loadstone, probably European, early 17th century,brass mounts with some gilding and pinned parts, engraved decoration ov...
A Fine Richard Glynne Silver and Gilt Brass Compass Dial, English, Circa 1710,signed R Glynne Fecit, the compass rose with thirty two compass poi...
A silver universal equinoctial ring dial, German, circa 1700,with double 1-XII hour scale, bridge gnomon with calendar and zodiac scales, suspensi...
A small gilt brass universal equinoctial ring dial, Continental, circa 1700,with double 1-12, 1-12 hour scales, outer ring with engraved latitude...
A brass universal equinoctial ring dial, English, mid-18th century,pip-hole gnomon sliding over calendar scale, chapter ring with Roman numerals...
Bion (Nicolas) The Construction and Principal Uses of Mathematical Instruments,translated and edited by Edmund Stone, 2 parts in 1, including supp...
A Rare Gilt Brass Square-Sided Multiple Dial, probably German, late or mid 16th century,possibly by Ulrich Schniep, the gilt brass pillar dial of ...
A rare gilt brass combined altitude disc sundial and perpetual calendar, German, mid-17th century,
A rare gilt brass combined altitude disc sundial and perpetual calendar, German, mid-17th century,constructed from five plates two of which are ro...
A hemispherical gilt brass scaphe dial, German, circa 1600,the hemispherical dial with spring loaded dial and marked with seven declination lines,...
A Rare Charles Whitwell Gilt Brass Astronomical Compendium, English, dated 1608,signed C Whitwell, the circular compendium with suspension loop, u...
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