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#ERNST LEITZ WETZLAR MICROSCOPE MANUAL SERIAL NUMBERS#
#ERNST LEITZ WETZLAR MICROSCOPE MANUAL FULL#
#ERNST LEITZ WETZLAR MICROSCOPE MANUAL PORTABLE#

Bausch & Lomb Optical Co., Rochester NY, Pat.6454, the Universal model monocular microscope, c. Bausch & Lomb Optical Co.,the Investigator model microscope, No.Bausch & Lomb Optical Co., patent Jan.Bausch & Lomb Optical Co., Rochester NY, #1364.Bausch & Lomb Optical Co., Rochester NY #2188, The Physician's model microscope, c.Bausch & Lomb Optical Co., Rochester NY #1078, The Physician's model microscope, c.#4541, The Williams petrological microscope.c.

#ERNST LEITZ WETZLAR MICROSCOPE MANUAL FULL#

The Professional model microscope with full mechanical stage. Co., Rochester NY, #768, Educational model, c.

Monocular microscope: Bausch & Lomb Optical.

Bausch & Lomb Optical Co.,The Universal model microscope fitted with binocular tubes.

Bausch & Lomb Optical Co, Rochester New York :.

#ERNST LEITZ WETZLAR MICROSCOPE MANUAL PORTABLE#

Portable microscope for blood analysis by a veterinarian in the field.

American made microscope on a double pillar and rotating base.

Unsigned monocular microscope on a double pillar.

Anonymous (unsigned and unattributed) :.

Allen, Springfield Mass., Early American monocular microscope, c.

Josiah Bennett Allen, Springfield Mass :.

In some cases, the dates are accurate to within the actual year of manufacture, while for others, the dates are only extrapolations or approximations based on the style of the microscope or other information.

In addition, use was made of journal articles, manufacturer's catalogs, and books that are contemporary with the instruments as well as more modern reference books and catalogs of established museum collections. dates of manufacture, or copies of original delivery books (if available).

#ERNST LEITZ WETZLAR MICROSCOPE MANUAL SERIAL NUMBERS#

Such information consists of the maker's name and address, dates on the microscopes or documents that accompany the microscopes, manufacturer's archives, lists of serial numbers vs. In dating the instruments presented on this website, use was made of whatever information happened to be available. Use the drop-down menu link above to choose the country of origin. Note:įor different types of illuminating apparatus, we refer to page 114.The list of microscopes presented below is organized with respect to the country of origin and further with respect to the instrument maker. 2000 ( listed on page 114).Ĭabinet-Mahogany wood, with lock and key. Illuminating Apparatus-Two-iris-diaphragm type, model "a" with " Ahrens" prism and five-lens condenser No. Objective Clutch Changer-Of new and patented design for objectives objectives remain individually and permanently centered. Ocular Adapter-To permit the use of ocularsand tube accessories of small diameter. Wright, adjustable by rack and pinion.Ĭap Analyzer Support Serving as socket for the top analyzer to rest on, provided with index line. Tube Analyzer-Anastigmatic type with "Ahrens" prism.Īmici-Bertrand-Lens-In centering mount with iris diaphragm, attached to slider, after F. Micrometer Screw-Of patented design, making use of ball bearings at the sliding surfaces whereby lost motion is eliminated completely and the mechanism acts entirely independently of lubrication one head of the micrometer screw is equipped with divided drum for depth measurements and since one interval at the drum equals 0.002mm, measurements are possible within this minute ratio. PETROGRAPHICAL MICROSCOPE "CM" Wide Tube for Oculars of Large Diameter) Object Stage-Of rotary pattern the periphery of the stage is furnished with scale and double vernier permitting readings within 0.1° the stage is furthermore equipped with a removable ring plate and may be clamped in position at any desired orientation two stage clips are furnished.