CASED ANTIQUE PAT 3 Oct '76 Bausch & Lomb "INVESTIGATOR" Brass MICROSCOPE

Description

CIRCA 1880 MAHOGANY
CASED ANTIQUE PAT 3 OCT, 1876 BAUSCH & LOMB "INVESTIGATOR" BRASS MICROSCOPE w/ 2 TOP HAT EYEPIECES - 2 OBJECTIVES - 2 STAGE PLATFORMS & 2 CONDENSORS - PLUS OTHER ACCESSORIES - ALONG W/ J.D. KING MICROSCOPY INSTRUCTION GROUP INVOICE
One CONDENSOR that comes with this circa 1880 "INVESTIGATOR" BAUSCH & LOMB brass microscope is a simple WHEEL OF STOPS CONDENSOR that is made ALL out of GUTTA PERCHA, while the other CONDENSOR is heavy and made of BRASS & GLASS as shown.  There is a removable GLASS STAGE with a PAT. DEC. 25, 1877 METAL and GUTTA PERCHA movable specimen slide holder with two metal slide clips while the stage below is of all machined BRASS with faint machinist turnings and with removeable metal specimen slide stage clips.
Comes with a dated 1884 J. D. KING MARTHA'S VINEYARD SUMMER INSTITUTE invoice in heavilly worn condition.
The substage mirror is made of GUTTA PERCHA.
Essentially - the outfits includes;
1.) Top hat eyepiece - small
2.) Top hat eyepiece - large
3.) Glass & brass bullseye condensor
4.) Gutta Percha WHEEL of STOPS condensor
5.) Cased B & L 4/10 - 110 DEGREE OBJECTIVE  (Increment incised COLLAR will not twist / adjust
- needs to be unfrozen) **MINTY** Finish
6.) Cased B & L 1" - 36 DEGREE OBJECTIVE - Case lacquer pitted and some nicks to objective finish -          but basically really nice
7.) Round Glass and Brass removeable stage w/ Dec. 25, 1877 PAT stage clip / specimen platen
8.) Metal slip case with 3 metal stage clips for main BRASS stage
9.) Round paperboard box for round glass specimen covers
10.) Metal specimen tweezers
11.) Tapered steel specimen examination rod
12.) Paper J. D. KING - MARTHA'S VINYARD SUMMER INSTITUTE invoice for seminar -
promise to pay note dated 1884
Case with ORIGINAL LOCKING KEY.
This "INVESTIGATOR" model was produced by Bausch and Lomb for about 7 years.  The SECOND MODEL under the B & L ensign was issued under the name i"UNIVERSAL" - which was covered by an additional patent to the OCT. 3, 1876 PATENT and was  DATED to the year 1885 and on the SECOND, more common "UNIVERSAL" MODELS had engraved both the "1876" and "1885" patent dates on the side of the limb.    The Bausch and Lomb "INVESTIGATOR" on offer does not have the later "1885" patent date.  Also, by 1885, Bausch and Lomb started to produce the more garden variety smaller form of objective - and not the sleek straightforward looking and more substantial looking objectives as is offered with the earlier "UNIVERSAL" MODEL we have on offer.
W
ear usually is consistent with age and use and the carry case does show such use.  However the microscope and objectives have 100% lacquer present with no pitting or scratches - basically **MINTY**.
Please see all photos as they are part of the description.
A wonderful example of the B & L "
INVESTIGATOR" MODEL with the GUTTA PERCHA MIRROR CELL and GUTTA PERCHA CONDENSOR w/ WHEEL OF STOPS.
STANDARD SHIPPING,
HANDLING
& INSURANCE IS .00
for
US sales. Includes
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SURCHARGE FEE.
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