THE “TINY ATOM MOTOR AND VARIABLE SPEED POWER APPLICATOR” KIT, American (Cleveland), c. 1955, contained in the original 6-3/4″ x 6-3/4″ x 1-7/8″ (17 x 17 x 5 cm) printed card box. Made by “Wilson’s of Cleveland,” the set includes motor, gearing, housing, pulley, instruction book, and price list, all unopened, unused, and in excellent condition.
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David and Yola Coffeen both have enjoyed academic careers, as planetary astronomer and as linguist/educator. But since 1982 (yes, 1982!) they have been full-time dealers in early scientific and medical instruments, under the name Tesseract. Selling primarily by catalogue (over 100 issued so far) they also have a web presence at www.etesseract.com, and can be contacted at email@example.com.