Lot 250 - [M] A MOUNTAINEERING THEODOLITE BY JOS & JAN FRIC, PRAGUE, CIRCA 1890

Sold for £397
Estimated at £300 - £500

Lot 251 - [M] A FINE MINING THEODOLITE BY JOS & JAN FRIC, PRAGUE, CIRCA 1895

Sold for £1,364
Estimated at £300 - £500

Lot 252 - [M] A LEAN-PATTERN MINER'S DIAL BY NEGRETTI & ZAMBRA, LONDON, CIRCA 1880

Sold for £496
Estimated at £400 - £600

Lot 253 - [M] A FINE THEODOLITE BY TROUGHTON & SIMMS, LONDON, CIRCA 1880

Estimated at £500 - £800

Lot 254 - [M] AN EXPEDITION THEODOLITE BY W. S. JONES, LONDON, CIRCA 1800

Sold for £744
Estimated at £600 - £800

Lot 255 - [M] A FINE THEODOLITE BY HILDEBRAND & SCHRAMM, FREIBERG, CIRCA 1880

Sold for £1,116
Estimated at £800 - £1,200

Lot 256 - [Z] A FINE THEODOLITE BY TROUGHTON & SIMMS, LONDON, CIRCA 1875

Sold for £434
Estimated at £350 - £450

Lot 257 - [M] A THEODOLITE BY G. GERLACH, WARSAW, CIRCA 1900, and a level by Eichler

Sold for £347
Estimated at £200 - £300

Lot 258 - [M] A FINE SURVEYING LEVEL BY A. MEISSNER, BERLIN, CIRCA 1830

Estimated at £300 - £500

Lot 259 - [M] A FINE SURVEYING LEVEL BY TROUGHTON & SIMMS, LONDON, CIRCA 1870

Sold for £124
Estimated at £300 - £500

Lot 260 - [M] A SURVEYOR'S CROSS BY RICHER, PARIS, CIRCA 1790

Sold for £124
Estimated at £200 - £300

Lot 261 - [M] A SURVEYOR'S CROSS BY CALDERONI & CO., PEST, CIRCA 1870

Sold for £118
Estimated at £150 - £250

Lot 262 - [M] A HAND-HELD SPECTROSCOPE, FRENCH, CIRCA 1890, and a hydrostatic balance

Sold for £174
Estimated at £200 - £300

Lot 263 - [M] A LIQUID LEVEL BY GAIFFE A. NANCY, FRENCH, CIRCA 1880

Sold for £81
Estimated at £150 - £250

Lot 264 - [M] A RARE COMPASS GALVANOMETER BY SIEMENS & HALSKE, BERLIN, CIRCA 1870

Sold for £620
Estimated at £500 - £800

Lot 265 - [M] A FINELY REFURBISHED 'SKELETON' TELEPHONE BY L.M. ERICSSON & CO., No. 16 FOR THE UK MARKET, EARLY 20TH CENTURY

Sold for £992
Estimated at £300 - £500

Lot 266 - [M] A SURVEYING LEVEL BY GILBERT, LONDON FOR THE EAST INDIA COMPANY, CIRCA 1820

Sold for £1,054
Estimated at £400 - £600

Lot 267 - [M] A 1¾IN. THREE-DRAW MAHOGANY AND BRASS TELESCOPE BY T. MASON, DUBLIN, CIRCA 1820

Sold for £112
Estimated at £250 - £350

Lot 268 - [M] A PRESENTATION TELESCOPE BY DOLLOND, CIRCA 1827

Estimated at £250 - £350

Lot 269 - Ø [M] Ø AN IVORY AND CARD ¾in. MONOCULAR, CIRCA 1780

Sold for £56
Estimated at £100 - £150

Lot 270 - [Z] A 2½IN. REFLECTING TELESCOPE BY AYSCOUGH, LONDON, CIRCA 1760

Sold for £992
Estimated at £800 - £1,200

Lot 271 - [Z] A 3IN. REFLECTING TELESCOPE BY FRASER BOND STREET LONDON CIRCA 1820

Estimated at £700 - £900

Lot 272 - [M] A 1¾IN. REFRACTING LIBRARY TELESCOPE BY MERZ, UTZSCHNEIDER & FRAUNHOFER IN MÜNCHEN, CIRCA 1830

Estimated at £400 - £600

Lot 273 - [M] A FINE 3½IN REFRACTING TELESCOPE BY SECRETAN, PARIS, CIRCA 1880

Sold for £1,116
Estimated at £1,500 - £2,500

Lot 274 - [M] A MODERN PAIR OF 25 X 150 BRIDGE BINOCULARS BY FUJI MEIBO

Sold for £9,300
Estimated at £3,000 - £5,000

Lot 275 - [M] A 12IN. TERRESTRIAL GLOBE BY JAMES WYLD, CHARING CROSS, LONDON, CIRCA 1842

Sold for £1,612
Estimated at £1,000 - £1,500

Lot 276 - [M] A MID 20TH-CENTURY SIMMANCE PATENT CONTINUITY BAROGRAPH

Sold for £74
Estimated at £100 - £150

Lot 277 - [M] Ø A MARINE BAROMETER BY W.B. ROSS, SUNDERLAND, CIRCA 1840; and a pair of Negretti & Zambra binoculars

Estimated at £400 - £600

Lot 278 - [M] A LATE 19TH-CENTURY MAXIMUM AND MINIMUM THERMOMETER BY NEGRETTI & ZAMBRA, LONDON

Sold for £62
Estimated at £80 - £120

Lot 279 - [M] A FINE AND ORIGINAL TRIPLE LEIDEN JAR CELL, DUTCH, CIRCA 1780

Sold for £9,920
Estimated at £8,000 - £12,000

Lot 280 - [M] A RARE FLOOR-STANDING PARABOLIC MIRROR OF LARGE SIZE, POSSIBLY BY HENDRIK HEN, AMSTERDAM, CIRCA 1815

Sold for £3,472
Estimated at £3,000 - £5,000

Lot 281 - [M] A TABLE-TOP PARABOLIC MIRROR CIRCA 1810

Sold for £1,178
Estimated at £1,000 - £1,500

Lot 282 - [M] AN EXCEPTIONAL SILVER-MOUNTED DRAWING SET ETUI BY BENJAMIN MARTIN, CIRCA 1760

Sold for £4,960
Estimated at £6,000 - £8,000

Lot 283 - [Z] A SMALL BRASS SECTOR BY NICOLAS BION, PARIS, CIRCA 1690; together with another similar, unsigned

Sold for £310
Estimated at £300 - £500

Lot 284 - [M] AN EARLY 19TH CENTURY DRAWING SET ETUI

Estimated at £250 - £350

Lot 285 - Ø [M] Ø A SILVER AND IVORY 2FT 2-FOLD CARPENTERS RULE, BY H.S. TROWER, LONDON CIRCA 1900, and a circular protractor

Estimated at £300 - £500

Lot 286 - Ø [M] Ø A 19TH CENTURY IVORY PROOF GAUGE RULE BY DYCAS OF LIVERPOOL; another rule and a monocular

Sold for £62
Estimated at £100 - £150

Lot 287 - [M] A CIRCULAR PROTRACTOR BY THOMAS JONES, CHARING CROSS ROAD, LONDON, CIRCA 1830 & De Grave Chrondrometer

Sold for £174
Estimated at £150 - £250

Lot 288 - [M] A NICKEL-PLATED BRASS YARD RULE BY HOLTZAPFFL & CO., LONDON, CIRCA 1900

Sold for £68
Estimated at £100 - £150

Lot 289 - [M] AN EARLY 19TH CENTURY SURVEYOR'S POCKET WAY-WISER BY CARY, LONDON

Sold for £1,488
Estimated at £150 - £250

Lot 290 - [M] A 1½IN. POCKET GLOBE, CIRCA 1830

Sold for £372
Estimated at £150 - £250

Lot 291 - [Z] A POCKET BAROMETER/COMPASS COMPENDIUM, BY J.B. DANCER, MANCHESTER, CIRCA 1900

Sold for £372
Estimated at £150 - £250

Lot 292 - [Z] A PAIR OF PRISMS BY JULES DUBOSCQ A PARIS, CIRCA 1860

Estimated at £600 - £800

Lot 293 - [M] AN INTERGRAPH BY W.F. STANLEY AND CO. LTD, CIRCA 1950

Sold for £149
Estimated at £250 - £350

Lot 294 - [M] CORDINGLEY'S COMPUTOMETER, CIRCA 1900

Sold for £868
Estimated at £800 - £1,200

Lot 295 - [M] A BLOW-PIPE APPARATUS BY J.T. LETCHER, TRURO, CORNWALL, CIRCA 1880

Sold for £211
Estimated at £150 - £250

Lot 300 - [M] A SAILOR'S PICTURE HALF MODEL / SHADOW BOX OF THE COMPOSITE BARQUE OCEAN ROVER OFF HAWAII, CIRCA 1880

Sold for £248
Estimated at £300 - £500

Lot 301 - [M] AN ATTRACTIVE WATERLINE MODEL OF THE BLUE RIBAND INMAN LINER S.S. PARIS [Ex-CITY OF PARIS] PROBABLY BY TRIGGS MARITIME ARCHITECTS, CIRCA 1895

Sold for £496
Estimated at £600 - £800