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Lot 294 - [Z] A CIRCULAR PROTRACTOR BY TROUGHTON & SIMMS, LONDON, CIRCA 1840
Sold for £372
Estimated at £150 - £250
Lot 295 - [Z] A FINE EXTENDED ARM PROTRACTOR BY J.D. POTTER, LONDON, CIRCA 1830
Sold for £310
Estimated at £100 - £200
Lot 297 - [M] A DRAWING SET ETUI BY THOMAS RUBERGALL, LONDON, CIRCA 1850
Sold for £434
Estimated at £200 - £400
Lot 298 - Ø AN EARLY 19TH CENTURY POCKET DRAWING SET ETUI and another similar
Sold for £347
Estimated at £250 - £350
Lot 299 - [M] Ø A FOLDING IVORY AND BRASS SECTOR BY ADAMS, LONDON, CIRCA 1790 & 4 protractors
Sold for £236
Estimated at £100 - £150
Lot 300 - [Z] A FINE 6IN. RADIUS GUNNER'S LEVEL BY NEGRETTI & ZAMBRA, LONDON, CIRCA 1890
Sold for £372
Estimated at £300 - £500
Lot 301 - [M] A 2IN. ACHROMATIC MARINE TELESCOPE BY GILBERT & SON, LONDON, CIRCA 1810
Sold for £248
Estimated at £250 - £350
Lot 302 - [M] AN EARLY 19TH CENTURY THEODOLITE BY JOHN CORLESS, LONDON, CIRCA 1815
Sold for £744
Estimated at £400 - £600
Lot 303 - [M] A 1½IN. SURVEYOR'S LEVEL BY TROUGHTON & SIMMS, LONDON, CIRCA 1830
Sold for £223
Estimated at £200 - £300
Lot 305 - [Z] A TWO-DAY HYDROGRAPHIC SURVEY CHRONOMETER BY THOMAS MERCER, ST ALBANS, 1925
Sold for £1,240
Estimated at £300 - £500
Lot 307 - [Z] A 1IN. THEODOLITE BY ADIE & WEDDERBURN, EDINBURGH, CIRCA 1890
Sold for £595
Estimated at £300 - £500
Lot 308 - [M] A THEODOLITE BY TROUGHTON & SIMMS, LONDON, CIRCA 1920
Sold for £558
Estimated at £250 - £350
Lot 309 - [M] A NEGRETTI & ZAMBRA 1915 PATENT WEATHER FORECASTER
Sold for £322
Estimated at £80 - £120
Lot 312 - [M] THREE MAX/MIN THERMOMETERS BY NEGRETTI & ZAMBRA, LONDON
Sold for £372
Estimated at £300 - £400
Lot 313 - [M] A COLLECTION OF THERMOMETERS BY NEGRETTI & ZAMBRA, LONDON, VARIOUS DATES
Sold for £124
Estimated at £100 - £150
Lot 314 - [M] A MODERN BAROGRAPH BY B. COOKE & SONS LTD, HULL
Sold for £347
Estimated at £150 - £250
Lot 315 - [M] AN EIGHT-DAY BAROGRAPH, CIRCA 1930; and Watson Bactil microscope
Sold for £347
Estimated at £200 - £300
Lot 316 - [M] A POCKET HYGROMETER BY NEGRETTI & ZAMBRA, LONDON, CIRCA 1890
Sold for £198
Estimated at £150 - £250
Lot 317 - [M] A TEST BAROMETER BY NEGRETTI & ZAMBRA, LONDON, CIRCA 1950
Sold for £3,720
Estimated at £200 - £400
Lot 318 - [M] A MODERN BRASS MARINE BAROMETER BY ABANTIQUO, LONDON
Sold for £223
Estimated at £80 - £120
Lot 319 - [M] A SET OF COURTAULD ATOMIC MODELS BY GRIFFIN & GEORGE LTD, LONDON, CIRCA 1966
Sold for £682
Estimated at £400 - £600
Lot 320 - [M] A GEOMETRIC SOLID BY G. CUSSONS LTD, MANCHESTER, 20TH CENTURY
Sold for £273
Estimated at £200 - £300
Lot 321 - [Z] 'PHYSICAL APPARATUS': price list issued by Baird & Tatlock and 4 others
Sold for £93
Estimated at £40 - £60
Lot 325 - [M] A RARE DR HEARDER'S PATENT GALVANIC MACHINE, CIRCA 1875
Sold for £186
Estimated at £200 - £300
Lot 326 - [M] Ø A RARE EXAMPLE OF GRIGG'S CONIC ELECTRO-MAGNETIC MACHINE, CIRCA 1873
Sold for £471
Estimated at £250 - £350
Lot 327 - [M] AN EARLY 19TH CENTURY BRASS AND STEEL SCARIFIER BY JOHN & EDWARD WOOD, MANCHESTER
Sold for £124
Estimated at £100 - £150
Lot 328 - [M] TWO TELEPHONE EARPIECES BY J. BERLINER OF HANOVER, CIRCA 1910
Sold for £149
Estimated at £150 - £250
Lot 329 - [M] THE FOLLOWING LOT IS SOLD AS SEEN A COLLECTION OF GEISSLER TUBES
Estimated at £500 - £800
Lot 332 - [Z] A RARE DUPLEX VACUUM INCANDESCENT LIGHTBULB PUMP BY GRIFFIN OF LONDON, CIRCA 1880
Sold for £1,488
Estimated at £200 - £400