North America Archives - Page 5 of 12

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As early as the 19th century, venous pressure was used in the diagnoses and assessment of congestive heart failure.Cohen’s apparatus was introduced between the wars, a time when the diagnostic importance of venous pressure was beginning to be more widely understood and measured clinically. Length of case: 13″ or 32.5cm. The maker of the instrument is the American firm, Becton-Dickinson. Read More...

28 Jan

~MINT BAUSCH and LOMB CONTINENTAL MODEL CCDS c. 1900~

By Scientifica Opticae Inc.

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Standing 16 inches tall, this CCDS Continental Model, serial number 38542 sold for $200 in 1900 ($7500 USD today). Horseshoe base, elaborate polarising substage (patented Jan.3, 1899) perfect for photo-micrography and minerology with a machined Damask pattern, fully rotatable, 4 inch circular mechanical stage, engine divided internally and externally. A pleasing combination of bright brass and nickel steel, this instrument was B&L’s top of the line (only to be outdone by the DOUBLE pillar DDS model). Rack and pinion are Read More...

14 Jan

Interesting American Chronometer signed W. N Bond In Boston N·543 Cased in mahogany box.

By Antiques Le Saint Georges

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Interesting American Chronometer signed W. N Bond In Boston N·543 Cased in mahogany box. Good condition . Mechanism perfect and function . Read More...

10 Jan

Schaer’s Self-Calculating Template

By M and R Gordon

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Schaer’s Self-Calculating Template was patented on August 6, 1895 in the USA. I was used to “Find the average yarn from average threads per inch” and to: “Find yards per square pound.” It is 10.5″ or 17cm long and made of steel. Read More...

07 Jan

Ohio Surveying Compass

By TESSERACT

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LARGE OHIO SURVEYING COMPASS, American, c. 1880, signed “T.F. Randolph, Cin., O.” The thick main plate is 15-3/4″ (40 cm) long, mounted with twin spirit levels, outkeeper adjustable 1-16, and 7″ diameter glazed compass with simple face, silvered degree ring divided full circle every half-degree, and very finely crafted needle (blued, with horizontally flat center and vertically flat ends, set with steel pivot, brass hub, and balance adjustment for needle dip). Below is an outkeeper knob, a canted needle Read More...

07 Jan

The Franklin Terrestrial Globe

By TESSERACT

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AMERICAN TABLE GLOBE, c. late 19th century, signed in the cartouche in the printed gores “The Franklin Terrestrial Globe, 12 inches in diameter containing all the Geographical Divisions & Political Boundaries to the present date. Carefully compiled from the best Authorities…Troy, N.Y.” Overlaid is the retailer’s paper “H.B. Nims & Co.” The printed globe gores are dense with detail, including many voyages of discovery which are traced, identified, and dated. The first transatlantic submarine cable (1858) is shown, plus Read More...

27 Dec

Antique J&W Grunow Microscope

By Orlando Microscopes

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Antique J&W Grunow Microscope. No Case or accessories. Microscope is signed on the body tube: “J&W Grunow 582” and is estimated to be C. 1868 or so. The stage is supposed to move in X and Y direction but due to some rust/corrosion on the bottom of the stage, neither of the knobs turns in either direction. The double-sided mirrors are in fair to good condition, however, the mirror mount to the sliding arm is loose. The microscope stands Read More...

21 Dec

Cased Bausch & Lomb Microscope

By Orlando Microscopes

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Cased Bausch & Lomb Microscope. This item is fixed and so does not tilt. It has a serial number plaque with serial number of 28918. No accessories other than what is mounted on the microscope, The eyepiece is labeled with the Bausch & Lomb marking, along with the markings of “1/2 Inch Tube Length 160.0 MM.” Research of Bausch & Lomb catalog places this microscope at C. 1898. Coarse focusing is very smooth and double-sided mirrors are in great Read More...

30 Nov

Cased Antique Bausch & Lomb Microscope

By Orlando Microscopes

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Cased Bausch & Lomb Microscope. Microscope and case are serial numbered “17475”. Research in a B&L catalog places the date of manufacturer at 1895. Only accessories in case are two empty brass objective cases marked “Bausch & Lomb Optical Co. 1/6” and “Bausch & Lomb Optical Co. 2/3”. Both of those objectives (also marked) are mounted on the scope. The case and microscope are in very good condition. The base of the microscope is signed: “Bausch & Lomb Optical Read More...

26 Sep

C1920s Patterson Circular Foreign-Body Fluoroscope

By M and R Gordon

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A scarce example of a C1920s Patterson Circular Foreign-Body Fluoroscope. It is complete and in nice condition,noting that one of the supports for the glass has separated (the glass remains securely in the frame) and that the exterior of the case shows evidence of use–see images. Length of instrument assembled, as shown in second image: 15″ or 37.5cm The Museum of Radiation and Radioactivity’s [ their example is incomplete] site notes: ” This circular hand-held fluoroscope was manufactured by the Read More...

02 Sep

1869 Gurley Solar Telescope Compass – One of Two STC’s Known (Updated)

By The Compleat Surveyor

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This is the only privately-owned Gurley Solar Telescope Compass (STC) known. For the reasons discussed below, the STC offered here should be a Top of The Bucket List item, and it is very unlikely that you will ever see another one offered for sale. Rarity Gurley apparently did not sell many STCs. Gurley started offering STCs for sale in its 1858 Catalogue, sold very few instruments of any kind during the Civil War Years (1861 to 1865), and then stopped selling Read More...

23 Aug

1920s Vit-O-Net Quack “Magnetic” Blanket

By M and R Gordon

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We are offering a c1920s Vit-O-Net quack “magnetic” blanket in excellent condition–no moth damage, tears or fading. One side is flannel, the other cotton broadcloth. It was sold as a cure for a variety of ailments ,but in 1930 the US Federal Trade Commission issued an order preventing the company from advertising it as having any medical benefits, saying that it was an electric blanket–no more no less! Dimensions: 60 inches by 75 inches approx. “William F. Craddock et al Read More...