Cylindrical Slide Rule - Pencil Cup - In Original Box

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Slide Rule Pencil Cup is an unusual slide rule pencil cup. The slide rule is in excellent, as-new condition and comes in the original box that has the printed directions on it. The cup consists of two sliding rings, each having two logarithmic scales. It works simply by lining up the number of one unit and looking over to see the amount of the other unit. (The other cups I've seen have the converter units on opposite sides of the sliding ring. Check my other auction for a cup showing this.) The slide rule cup measures approximately 4 7/8 inches tall and has an outer diamter of 2 3/4 inches and an inner diameter of 2 1/4 inches. (Please see pictures and scans below.) I've listed the conversions below, but you can see them for yourself by taking the link to a scan below. (I rolled the cup along my scanner so you can get a good idea of all of the scales.) M.P.H. / K.P.H. Nautical Miles / Miles / Kilometers Meters / Yards / Feet Cubic Meters / Cubic Yards Metric Tons / Tons Kilograms / Pounds Ounces (AV) / Grams (x 10) Drams(AV) / Grams Cubic Inches / Cubic Centimeters Bushels / Dekaliters / Pecks / Dry Quarts / Liters / Dry Pints Sq. Meters / Sq. Yards Hectares / Acres Gallons / Liters / Quarts / Pints Liquid Oz. / CC (x 10) / Milliliters (x 10) Sq. Inches / Sq. Centimeters Degrees C / Degrees F The winning bidder pays actual shipping. read more

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