301 (Unassigned maker; double pillar compound microscope; c. 1900)

302 (J Casartelli & Son; cloth counting glass; c. 1910)

303 (unassigned maker; late 19th century to early 20th century)

304 (R & J Beck; student’s microscope; c. 1873)

305 (Carl Reichert; c. 1905)

306 (W & H Seibert, student microscope, 1910s)

307 (unknown maker; early 19^th century)

308 (unknown maker; 1930s)

309 (unknown maker; Stanhope magnifier; late 19^th century to early 20^th century)

310A (unknown maker; unassigned maker; folding linen tester; mid to late 20^th century)

310B (unknown maker; unassigned maker; folding linen tester; mid to late 20^th century)

310C (unknown maker; unassigned maker; folding linen tester; mid to late 20^th century)

311 (Gowllands; folding linen tester; mid-20^th century)

312 (unknown maker; simple inclinable microscope; c. 1890)

313 (Carl Zeiss; microscope invertoscope D; 1980s)

314 (Hartnack & Prazmowski; microscope stand III; c. 1880)

315 (unassigned maker; Coddington magnifier; late 19th century to early 20th century)

316 (Carl Zeiss; inverted microscope; 1960s)

317 (W. Watson & Sons; Wand’s microscope; c. 1932)

318 (unassigned maker; simple inclinable compound microscope; late 19th century)

319 (Ernst Leitz; simple dissecting microscope; early 20^th century)

320 (unassigned maker; binocular microscope; c. 1890)

321 (L Casella; Garden or seed microscope; c. 1870)

322 (unassigned maker; aquatic or botanical microscope; early 19th century)

323 (assigned to Deyrolle; simple compound microscope; c. 1900)

324 (W. Watson & Son; Praxis microscope; c. 1916)

325 (assigned to J Parkes & Son; child’s portable compound microscope; c. 1870)

326 (unassigned maker; compound linen proving microscope; early 20^th century)

327 (Optical Instrument Services, inverted microscope; 1990s)

328 (R & J Beck; ‘London’ handle model; c. 1913)

329 (unassigned maker; drum microscope; mid 19th century)

330 (R & J Beck; Economic microscope; c. 1878)

331 (unknown maker; inclinable simple compound microscope; c.1890)

332 (W. Watson & Sons; polarising microscope; 1910s)

333 (R & J Beck; Cornex dissecting microscope; 1950s)

334 (unassigned maker; botanical microscope; first half of the 19th century)

335 (Baird & Tatlock; scaleometer; 1950s)

336 (unassigned maker; portable microscope; 1960s)

337 (PA Permuta Plastics Ltd; pocket folding microscope; 1950s)

338 (W Watson & Sons; Universal dissecting microscope; c. 1930)

339 (unknown maker; student microscope, second half 19th century)

340 (unassigned maker; drum microscope; late 19th - early 20th century)*

341 (unassigned maker; simple compound microscope; late 19th - early 20th century)*

342 (unassigned maker; drum microscope; late 19th - early 20th century)*

343 ((assigned to Charles Baker; improved nature microscope; second quarter of the 20th century)*

344 (Carton Optical Co; toy stereo microscope; 1970s – 1980s)*

345 (C & D; The Field microscope; 1950s)*

346 (Britex; Minor microscope; mid-20th century)*

347 (unknown maker; Octopus microscope; 1960s)*

348 (WRP; simple microscope; 1960s)*

349 (Lumex; toy microscope; 1960s)*

350 (Charles Baker; hardness tester microscope; mid-20th century)*

351 (Ernst Leitz; stereo binocular head; 1940s - 1950s)*

352 (W Watson & Sons; KIMA microscope; c. 1932)*

353 (unassigned maker; microscope model XSC-04; 1960s)*

354 (W. Watson & Sons; low-power binocular dissecting microscope; c. 1932)*

355 (Carl Reichert; stereoscopic microscope MAK; 1950s)*

356 (UKO B & L; handheld stereoscopic microscope; mid-20th century)*

357 (Meiji Labax Co. Ltd.; stereo head EMT series; 1990s)*

358 (American Optical; Stereo Star Zoom head; 1960s – 1980s)*

359 (Kyowa; Stereo body head, model SDZ; 1970s - 1980s)*

360 (Phillip Harris; small stereoscopic microscope; 1990s)*

361 (Nikon; microscope series S; 1970s)*

362 (Nikon; microscope model L-Ke; 1970s)*

363 (R & J Beck; Binomax binocular head; 1930s)*

364 (Theodore Hamblin; stereo binocular head; mid-20th century)*

365 (CTS; stereo binocular head; mid-20th century)*

366 (unknown maker; stereo binocular head; 1960s – 1980s)*

367 (CTS; stereo microscope; 1960s)*

368 (W Watson & Sons; low-power stereo dissecting microscope; c. 1937)*

369 (Bausch & Lomb; StereoZoom 4 microscope; 1960s)*

370 (Charles Perry; stereo microscope, model Prefect; 1960s)*

371 (KOMZ; stereo microscope; 1980s)*

372 (Carl Zeiss; stereo microscope SM XX; 1970s)*

373 (R & J Beck; Stereoscopic microscope Binomax; 1930s)*

374 (R & J Beck; Stereoscopic microscope Greenough; 1940s – 1960s)*

375 (Bausch & Lomb; Stereoscopic Greenough microscope; 1930s)*

376 (Prior; Stereoscopic microscope; 1950s)*

377 (American Optical; stereoscopic shop microscope; c. 1948)*

378 (Spencer; stereoscopic microscope; c. 1920)*

379 (Prior; Stereoscopic microscope; 1950s)*

380 (Negretti & Zambra; binocroscope; early 20th century)*

381 (Ernst Leitz; stereo binocular head; mid-20th century)*

382 (assigned to Robert Field; Teasdale's Field Naturalist's Microscope; c. 1880)*

383 (W Watson & Sons; Service microscope; c. 1934)*

384 (W Watson & Sons; Service microscope; c. 1947)*

385 (Negretti & Zambra; binocroscope; early 20th century)*

386 (Prior; Stereoscopic microscope, model S.B.F.; 1950s)*

387 (Prior; Stereoscopic microscope; 1940s)*

388 (Charles Perry; Stereoscopic microscope; 1960s)*

389 (Charles Perry; Stereoscopic microscope, model Classic Nº. 2; 1920s)*

390 (Charles Baker; Greenough binocular microscope; 1950s)*

391 (Watson Barnet; stereoscopic microscope; c. 1959)*

392 (Vickers; Patholette microscope; 1960s)*

393 (Charles Baker; metallurgical microscope; 1950s)*

394 (Meopta; stereoscopic microscope; early 1950s)*

395 (R & J Beck; stereo microscope; 1940s)*

396 (Bausch & Lomb; stereo microscope, model SSM15; 1960s)*

397 (Vision Engineering Ltd; 4/200 stereo microscope; 1960s)*

398 (Wild Heerbrugg; microscope M20; 1960s)*

399 (R & J Beck; microscope model 47L; 1950s – 1960s)*

400 (Ernst Leitz; stereo binocular microscope; 1930s)*