linen prover

English

Noun

linen prover (plural linen provers)

1. (historical) A small microscope for counting the threads in a given space in linen fabrics.

References

Edward H[enry] Knight (1877) “Linen prover”, in Knight’s American Mechanical Dictionary. […], volumes II (GAS–REA), New York, N.Y.: Hurd and Houghton […], →OCLC.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “linen prover”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)