spare gearboxes (3) for marginal oscillator
Date: mid 20th-late 20th Century
Inventory Number: 2004-1-0408g
Classification: Nuclear Magnetic Resonance
Dimensions:gearboxes: 13 x 18 x 14.5 cm (5 1/8 x 7 1/16 x 5 11/16 in.)
pulleys: 9.2 x 19.3 x 18 cm (3 5/8 x 7 5/8 x 7 1/16 in.)
Accessories: five odd knobs, each with some sort of arrow showing which way it is pointing
Description:
Two identical gearboxes inside cast-iron cases, and one shop-built adjustable pully system.
The cast-iron cases, mounted on wood bases, appear to be put together from three standardized sections, labeled "NL-31704-2" (top), "NL-31846-14A" (front) and "NL-31913-12" (back). Each has five protruding shafts, some of which carry attachments (black plastic knobs, a universal ball joint, a coupler).
The pulley system has three elastic bands and four separate pulley "clusters" (sets of pulleys of various sizes that turn together) made of clear plastic. It has a metal base and sides that look very much like the base and sides of the Rf coil (2004-1-0408b). Inscribed on the ends of the base beneath the pulleys are digits, arranged vertically: one side has 5/4/5 and 2/3/4; the other has 1/3/5. The pulley system has two protruding shafts, one with a coupler attached.