miscellaneous metal objects with sliding parts
Date: mid 20th-late 20th Century
Inventory Number: 1997-1-0039b
Classification: Metal fittings
Subject:
Maker: American ?
Cultural Region:
Dimensions:
2 x 58.8 x 2 cm (13/16 x 23 1/8 x 13/16 in.)
Accessories: has ruler markings on it, and on the sliding part (which is pulled by a pulley-rope system)
Description:
A rectangular metal bar with a sliding sleeve. On one side, the bar is marked in increments of 1-40 (centimeters). The metal sleeve moves along the bar, controlled by a wire attached at each end. The wires are attached to the sleeve by a pair of slot-headed screws. At each end of the bar the wire is attached to a pulley inset into the bar. The sliding sleeve has a vernier scale (1-10).
At one end, a circular adjustment knob with a knurled edge controls the motion of the wire. The other end has a threaded rod with a spring and screw assembly of unknown function.
At one end, a circular adjustment knob with a knurled edge controls the motion of the wire. The other end has a threaded rod with a spring and screw assembly of unknown function.
Signedunsigned
FunctionUnknown. Vernier on sliding sleeve indicates it is a high-precision device.