Photographs, Optical Toys & Science

Lot 289 - A Roberts Sliding Gunter Rule, Nairne & Blunt, London

Sold for £8,750

Result including buyers premium

Lot 290 - 12" John Brown Sector Quadrant

Sold for £3,000

Result including buyers premium

Lot 291 - Thomas Heath, London Boxwood Sector

Sold for £375

Result including buyers premium

Lot 292 - 4 Slide Gauger Slide Rule

Sold for £106

Result including buyers premium

Lot 293 - W & S Jones, A Rare & Important 24" Soho Scale Rule

Sold for £850

Result including buyers premium

Lot 294 - Collection of 4 Weight Calculating Slide Rules

Sold for £162

Result including buyers premium

Lot 295 - Froude's Ship Displacement Slide Rule by Stanley

Sold for £106

Result including buyers premium

Lot 296 - Wollaston Slide Rule of Chemical Equivalents

Sold for £2,000

Result including buyers premium

Lot 297 - English Chemical Equivalents Slide Rule after Wollaston, hydrogen-scale variant

Sold for £2,875

Result including buyers premium

Lot 298 - A 9" 4 slider Gaugers Rule, Edward Roberts

Sold for £88

Result including buyers premium

Lot 299 - Walter Hays, 18" Brass Sector Rule

Sold for £1,875

Result including buyers premium

Lot 300 - John Brown, large 18" Sector Type Rule

Sold for £3,250

Result including buyers premium

Lot 301 - 12" Gunter Type Rule

Sold for £94

Result including buyers premium

Lot 302 - Unusual Brass Rule Engraved with Symbols

Sold for £6,500

Result including buyers premium

Lot 303 - 19th Century Comparative Measures Rule or International Measures Rule

Sold for £312

Result including buyers premium

Lot 304 - Robert Corson Coggeshall Improved Slide Rule

Sold for £812

Result including buyers premium

Lot 305 - Unusually Small 6" Gaugers Rule, William Lewis

Sold for £250

Result including buyers premium

Lot 306 - Unusual 4 Slide Gauger Rule, Edward Roberts

Sold for £500

Result including buyers premium

Lot 307 - Thomas Heath, Brass Sector Rule

Sold for £2,125

Result including buyers premium

Lot 308 - 18th Century, Boxwood Gunter rule, and other

Sold for £375

Result including buyers premium

Lot 309 - 2 Ganga Ramm's Patent Slide Rules By Holtzapffel & Co. London

Sold for £525

Result including buyers premium

Lot 310 - Financial, Compound Interest Slide Rule, Cary

Sold for £312

Result including buyers premium

Lot 311 - Collection of Alcohol related Slide Rules

Sold for £94

Result including buyers premium

Lot 312 - Collection of 19th Century Slide Rules

Sold for £250

Result including buyers premium

Lot 313 - A Pair of Evans Paper Makers Rules

Sold for £100

Result including buyers premium

Lot 314 - Late 18th Century Slide Rule

Sold for £150

Result including buyers premium

Lot 315 - Boxwood Double Slide Gaugers Rule

Sold for £188

Result including buyers premium

Lot 316 - 2 Boxwood Double Slide Gauger Rules

Sold for £150

Result including buyers premium

Lot 317 - A 24" Gaugers Rule, Edward Roberts

Sold for £262

Result including buyers premium

Lot 318 - Routledge Engineer’s Rule, & Another Similar

Sold for £200

Result including buyers premium

Lot 319 - A 24" Gaugers Rule, Edward Roberts

Sold for £275

Result including buyers premium

Lot 320 - 18" Gaugers Rule

Sold for £212

Result including buyers premium

Lot 321 - 3 Sided Gaugers Rule, Dring & Fage

Sold for £100

Result including buyers premium

Lot 322 - Three Slide Boxwood Gaugers rule

Sold for £106

Result including buyers premium

Lot 323 - Apparatus, Observation of Fire Slide Rule

Sold for £262

Result including buyers premium

Lot 324 - Textile Slide Rule

Sold for £175

Result including buyers premium

Lot 325 - S. Coulson Engineer, Slide Rule

Sold for £81

Result including buyers premium

Lot 326 - Four-Sided Gauger's Slide Rule, Edward Roberts

Sold for £150

Result including buyers premium

Lot 327 - Hypsometrical Slide Rule

Sold for £125

Result including buyers premium

Lot 328 - Hannyngton's Extended Slide Rule

Sold for £500

Result including buyers premium

Lot 329 - Wedgewood's Patent Noctograph

Sold for £212

Result including buyers premium

Lot 330 - 18th Century24" Boxwood Sector

Sold for £125

Result including buyers premium

Lot 331 - Philips Photographic Exposure Meter, Slide Rule

Sold for £525

Result including buyers premium

Lot 332 - Collection of 7 19th Century Slide Rules

Sold for £438

Result including buyers premium

Lot 333 - 24" Logorithmic Scale Rule, Cole

Sold for £100

Result including buyers premium

Lot 334 - Boxwood Folding Railway Engineer’s Rule, Stanley London

Sold for £62

Result including buyers premium

Lot 335 - S. Coulson Engineer, Slide Rule

Sold for £112

Result including buyers premium

Lot 336 - 18th Century Italian Brass Sector

Sold for £6,000

Result including buyers premium