282

RARE EARLY AMERICAN MICROSCOPE - Civil War "US Army Hospital" Monocular Microscope by John Zentmayer, Philadelphia, manufactured 1859-1876, as "Zentmayer''s Grand American Microscope". This is marked as being sold by J.H. McAllister of New York, No. 477 (circa 1861). Good condition, wear to gilding, good optics. From literature of the time: "It is eighteen inches high when arranged for use. The instrument is mounted on a broad tripod with revolving platform, beveled, silvered, and graduated in degrees for measuring the angular aperture of Achromatic Objectives. Upon this platform two pillars are planted, which carry the curved bell-metal bar to which the body of the instrument, the stage, the secondary body, and mirrors are attached. The bar supports almost the entire length of the body, giving great steadiness and freedom from tremor. The movement of the body it effected by rack and pinion, connected with two large milled heads, which form the coarse adjustment. It has a graduated draw-tube to receive the eye-piece, erector, and analyzer. A fine micrometer screw with graduated and silvered head, acting on a lever, forms the delicate fine adjustment. Below the stage is the secondary body, a short tube, perfectly centrical to the main body, and moved by rack and pinion, to receive accessories. The large plane and concave mirrors are so attached as to facilitate oblique illumination and to swing in one plane to the optical axis of the instrument. To ensure smoothness and durability in the movements, the touching parts are of different metals; one being always of hammered brass, the other of bell metal. The stage is firm, broad, and steady, and only 3/16 inch thick, giving great facility for extreme oblique illumination. It has rectangular movements of one inch in both direction, operated by milled heads that work upon the same axis, with an additional one on the other side of the stage (not visible in the cut), by which diagonal movements are obtained. Upon the square stage a revolving object-carrier is placed. The beveled and silvered edge of the revolving plate is graduated into degrees, and serves as a goniometer, Graduation are also connected with the rectangular movements of the stage, to indicate the position of an object in view so that, when once recorded, it can be easily refound.

E EARLY AMERICAN MICROSCOPE - Civil War "US Army Hospital" Monocular Microscope by John Zentmayer, Philadelphia, manufactured 1859-1876, as "Zentmayer''s Grand American Microscope". This is marked as being sold by J.H. McAllister of New York, No. 477 (circa 1861). Good condition, wear to gilding, good optics. From literature of the time: "It is eighteen inches high when arranged for use. The instrument is mounted on a broad tripod with revolving platform, beveled, silvered, and graduated in degrees for measuring the angular aperture of Achromatic Objectives. Upon this platform two pillars are planted, which carry the curved bell-metal bar to which the body of the instrument, the stage, the secondary body, and mirrors are attached. The bar supports almost the entire length of the body, giving great steadiness and freedom from tremor. The movement of the body it effected by rack and pinion, connected with two large milled heads, which form the coarse adjustment. It has a graduated draw-tube to receive the eye-piece, erector, and analyzer. A fine micrometer screw with graduated and silvered head, acting on a lever, forms the delicate fine adjustment. Below the stage is the secondary body, a short tube, perfectly centrical to the main body, and moved by rack and pinion, to receive accessories. The large plane and concave mirrors are so attached as to facilitate oblique illumination and to swing in one plane to the optical axis of the instrument. To ensure smoothness and durability in the movements, the touching parts are of different metals; one being always of hammered brass, the other of bell metal. The stage is firm, broad, and steady, and only 3/16 inch thick, giving great facility for extreme oblique illumination. It has rectangular movements of one inch in both direction, operated by milled heads that work upon the same axis, with an additional one on the other side of the stage (not visible in the cut), by which diagonal movements are obtained. Upon the square stage a revolving object-carrier is placed. The beveled and silvered edge of the revolving plate is graduated into degrees, and serves as a goniometer, Graduation are also connected with the rectangular movements of the stage, to indicate the position of an object in view so that, when once recorded, it can be easily refound.

Accepted Forms of Payment:

American Express, Discover, MasterCard, Money Order / Cashiers Check, Paypal, Personal Check, Visa, Wire Transfer

Shipping

SHIPPING
1) We have hired Global Packing & Shipping (GP&S) as our designated shipper. Shortly after the auction, you will receive an email from them with a quote for shipping. Quotes for shipping large items may take longer. For pre-auction quotes or other information please contact: Global Packing & Shipping Phone: 207-596-2926 Email: [email protected]
2) Buyers are to pay GP&S (or other shipper) directly for their services. Any damage or delivery issues (regardless of any assistance offered by TPAG) are between the buyer and GP&S or other shipper chosen by the buyer.
3) Shipping will occur after all payments have been made. The shipper will have the most up-to-date shipping and tracking information.
4) Shipments will be insured for the full purchase price unless other coverage is requested.
5) Customers may make their own arrangements with a shipper other than GP&S; however, there may be sales tax implications (see "Sales Tax" section). Your items will be released for shipping once full payment is received.
6) Items left at TPAG for more than 30 days after the date of the auction will be subject to a storage fee of $10 per day/per item unless prior arrangements have been made.
7) The inability to find an acceptable shipping option is NOT a reason for non-payment of an item's full purchase price.
8) TPAG will not alter any catalog descriptions, or declare less than the full purchase price on any international customs paperwork. All international customs documents and costs are the responsibility of the buyer.
9) If you choose to pick up your property from TPAG, we request that you call 24 hours in advance to make arrangements.

November 18, 2016 11:00 AM EST
Thomaston, ME, US

Thomaston Place Auction Galleries

You agree to pay a buyer's premium of 20% and any applicable taxes and shipping.

View full terms and conditions

Bid Increments
From: To: Increments:
$0 $99 $10
$100 $499 $25
$500 $999 $50
$1,000 $2,499 $100
$2,500 $4,999 $250
$5,000 $9,999 $500
$10,000 $14,999 $1,000
$15,000 $49,999 $2,500
$50,000 $99,999 $5,000
$100,000 + $10,000