A Cased Bausch & Lomb Model DDE Binocular Compound Microscope and Accessories, circa 1949. 12 inches high (30.5 ... (Total: 4 Items)

Description

A Cased Bausch & Lomb Model DDE Binocular Compound Microscope and Accessories, circa 1949
12 inches high (30.5 cm) (base)

PRIVATE WEST COAST COLLECTION

Binocular Compound Microscope. "Bausch & Lomb Opt. Co. U.S.A. PAT. 1,860,430 1,863,031 CD5088" Model DDE ca. 1949. Complete description in 1929 B&L Catalog, p. 32. Only difference is that binocular head on this instrument does not switch to monocular with a knob. 4-position rotating nosepiece. Objectives, some cans: "1.3x WIDE FIELD OBJECTIVE BAUSCH & LOMB" ~7.5x "24mm 0.20 N.A. BAUSCH & LOMB OPT. CO. ROCHESTER, N.Y. U.S.A. U.S. PAT. 1,557,503 1,889,794" chrome, Zeiss clear plastic can. For photomicrographic use without an eyepiece. "8x ACHROMATIC 22.7mm 0.17 BAUSCH & LOMB OPT. CO. ROCHESTER, N.Y. U.S.A.", chrome. "10x APOCHROMAT 16mm 0.30 BAUSCH & LOMB ROCHESTER, N.Y. U.S.A." brass. "43x 4mm 0.65 BAUSCH & LOMB OPT. CO. ROCHESTER, N.Y. U.S.A." chrome w/black can. "45x APOCHROMAT 4mm 0.95 3003 BAUSCH & LOMB ROCHESTER, N.Y. U.S.A." brass with correction collar, "10 15 20". "90x APOCHROMAT 2mm 1.40 WL9158 BAUSCH & LOMB OPT. CO. ROCHESTER, N.Y. U.S.A." brass "97x 1.8mm 1.25 BAUSCH & LOMB OPT. CO. ROCHESTER, N.Y. U.S.A. U.S. PAT. 1,557,503 1,889,794" chrome, B&L plastic can with instruction sheet.
Extra black cans: 32mm & 48mm.
Oculars: 1 pair 10x & 12.5x compensating; 1 each HYPERPLANE: 5x, 7.5x, 10x; 1 ea. 10x wide field. 2 brass cans with black inserts: 4mm, 16mm.
Condensers:
"B.&L. OPT. CO. U.S.A. ACHROMAT 8.9mm 1.40 N.A. SLIDE 1.5-1.6mm"
"Bausch & Lomb Optical PARABOLOID CONDENSER SLIDE THICKNESS 1.5-1.6mm"
"32", otherwise unsigned. With a single planoconvex lens.
"BAUSCH & LOMB OPT. CO. ROCHESTER, N.Y. U.S.A. 0.70 N.A."
Blank condenser plate. Polarizer and analyzer (stuck).
Stage micrometer, "B&L 0.005 In.", leatherette case.
Monocular photomicrographic body tube, spare binocular body tube that switches to monocular.
Mahogany box with accessory drawer.

Complete description in 1929 B&L Catalog, p. 32.
Extensive articles in The Journal of The Microscope Historical Society, Vol. 7, #3, Winter 99/00 and MSSC Journal, Vol. 4, #12, Dec. 99. Ex-B&L employee estimates 100 were manufactured and about 25 are known to exist. B&L Illuminator and Transformer. Not tested. B & L Filter Set. 6 glass filters 2 in. square for use in illuminator. Leatherette covered box.

Accompanying this lot are three photocopied articles pertaining to this model.


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