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La touche Echap provoque la fermeture de la fenêtre.
One of a series of 36 numbered photo postcards "Made in Hoboken." All are titled on the image (front) side: "Greetings form Hoboken: Birthplace of Baseball and Frank Sinatra." Numbering and description of the image are on the reverse. Manufacturer's name, brand and stock number are in red paint on the exterior of the first section on each end; in black on the interior of the same section. Mahogany, machined and laminated; with laminated white celluloid plastic ruled ("engine divided") scales in red and black; bottom edge has laminated centimeter rule; top front edge beveled with laminated white celluloid ruler, English measure by inches and sixteenths; 10-5/8" overall length x 1-5/16" high x 3/8" thick. Back has an inset printed table of settings, formulas and ratios. Standard, steel 66 feet, model 6413, made by Keuffel & Esser Company, New York, no date, circa 1890-1905.
Metal with white painted finish except on eyepiece and at mounting rings; black lettering both sides. This telescope was made under contract for Western Electric Co.
Embossed leather covered metal case, 3-1/8" diameter x 7/8" thick, with nickel plated folding crank handle; 25 foot long x 5/8" wide white woven tape with black graduations, feet, inches and half inches; ring end in measurements.
Artist is not identified, but it was probably an employee of K & E. 1982 from a then-operating Hoboken business, Maritime Hardware. The image area is slightly darkened as a rectangle which indicates that it was probably once matted or framed. The Grand-Adams Apartments formerly Keuffel-Esser Factory. Hinged clamshell wood case, covered with black leather, K&E logo stamped on top, 17-3/4" long x 3-3/4" deep x 3/4" thick; fitted wood interior with green velveteen. Only product marking is on the 13-7/8" long bar with cap end: "Paragon K&E Co. Folding rule, model 7965F, 72" long open, made by Keuffel & Esser Co. K&E had their main office and factories in Hoboken when this item was made. Drafting tool set manufactured by Keuffel & Esser Co., New York. Typically used in land survey work by a surveyor and assistant (or one end could be held by a stake.) Brand end handles, stirrup shape, 3-3/4" wide x 2-1/2" long. Each c Polyphase (Mannheim) Slide Rule 4053-3, 10 inch, made by Keuffel & Esser Co., New York and Hoboken, no date, circa 1914-1915.
Paragon heavyweight tubular beam compass, probably model 502X, distributed by Keuffel & Esser Company, (Hoboken, N. Stainless steel machined bars and holders; plated metal accessories except steel compass point. One side has the engraved view of the Hoboken factories that was used in their catalogs and on their letterhead. Wood, painted, with brass tips and hinge hardware; white paint with black numerals and rule markings. Name and stock / catalog number: K&E Gold Tip Heavy Duty 7965F. This drawing compass typically used for drafting or technical drawing was intended to hold pencil lead, but usually an accessory holder could be attached for ink drawing. Thirteen metal pieces, nickel plated and other finishes, in green velveteen lined fitted case covered with bluish-black leather grained cloth; attached cover flaps with snap closures. Serial number 897007 which appears on the left end of slide back and on the left end of centimeter rule on bottom. Twelve guage steel links, 100, (7-1/4" except one end link) and rings with brass handles at each end. Adjustment screw for link at beginning end; diamond shaped brass marker tags marking each 6' 6" foot increment.
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Having contact with the original owner of a slide rule that remembers the year it was purchased helps on determining the age. In general it is safe to assume a linear production rate between the rollover dates particularly for the common types rules.
Other Slide Rule dates are currently in development. Please refer to the museum library and individual galleries as this page is being built. Serial numbers can be used to approximate the manufacture date of a given rule however not necessarily the sales date.
Dating a slide rule becomes difficult if a manufacturer did not imprinting a date code or serial number on the stock. This comprehensive research will enable you to find the period of manufacture for most every Dietzgen slide rule from 1887 through 1972.Tags: Adult Dating, affair dating, sex dating