||The thread scale at the left was used
in the textile industry to measure the number of threads per inch
in a sample of cloth. It has three scales, once silvered, that rotate in
the view of the eyepiece. The lever behind the eyepiece disengages the screw
from the nut, allowing the carriage to be located any place along its travel.
The base is 8.7 cm wide and 6.7 cm deep.
The scale was made by Chronik Brothers of New York, and sold by Charles Lowinson of New York. The patent dates are Oct. 20, 1908 and Sept. 20, 1930.
It was donated to the Greenslade Collection by Daniel Chaucer.