Wool bunting pennant flag. White field with a red border on the hoist edge. Blue square machine-stitched in the middle of the flag. White cotton hoist with no grommets. The inscription on the hoist ...

This component consists of one brass and one steel gear held together by a cylinder. Parts of the Bush differential analyzer surviving at the Smithsonian have museum numbers MA.314824 and 1983.3002.01 ...

Each of these five aluminum spiral gears has a hole in the center. The dimensions are for each gear. A mark reads: 146335 6. Parts of the Bush differential analyzer surviving at the Smithsonian have ...

Physical Description: silver (overall color)metal, plastic (overall material)Measurements: overall: 4 in x 22 in x 20 in; 10.16 cm x 55.88 cm x 50.8 cm ...

This spiral-bound manual has a green and white cover. It describes the use of the HP-55 programmable handheld electronic calculator. This version is dated February 1975. Compare with a slightly ...

This black leather carrying pouch for an electronic calculator has a Velcro fastening and a loop that fits over a belt. A mark on the belt side reads: H. B. BECKER. "H.B. Becker" written in gold ink ...

This twenty-two-page spiral-bound booklet gives basic information about the HP-45 handheld electronic calculator. It fits in the carrying pouch for the calculator. For the calculator, see 2004.3053.01 ...

The HP-35 was the first handheld electronic calculator to compute all the functions represented on a slide rule. It has a black plastic case and a total of thirty-five square or rectangular plastic ...

Wool bunting tapered swallowtail flag. Blue field with two diagonal white stripes, or bends, that extend from either end of the hoist to the end of each tail. The stripes cross at the fork of the ...

This micrometer eyepiece is part of the transit instrument (aka meridian circle) made by William J. Young, in Philadelphia, and installed in the new observatory at ...

These five pieces can be arranged as a square two ways. A sheet in the case shows the solution. A mark on this container reads: Puretest (/) Aspirin (/) Tablets (/) U.S. 902. This is Wheeler's model ...

PaceSetter Sewing Machine (Brother); 1954-1956; with portable case, Made by the Brother Sewing Machine Co. in Japan. Illustrative of the work of inventor Solomon Adler.