EYEPIECE MICROMETER TYPE LINEN PROVER MICROSCOPE:
c. 2ND QUARTER, 19TH CENTURY (1928-1954)
MAKER: GRIFFIN & TATLOCK (successors to J.J. Griffin and Baird & Tatlock)
The 'eyepiece micrometer' type of linen prover by Griffin & Tatlock is illustrated on this page.
DESCRIPTION
This chrome-plated instrument is a simple form of eyepiece micrometer where the micrometer built into the optics is the scale. There are two different sets of optics. The little handle is detachable.
HISTORY OF GRIFFIN AND TATLOCK:
This company is a well known instrument maker. J.J. Griffin was succeeded in about 1928 by Griffin and Tatlock by Merging with the Glascow firm of Baird & Tatlock. There was also a London-based separate Baird & Tatlock. Griffin & Tatlock became Griffin and George Ltd about 1954.
A virtually identical linen prover or simple microscope was marketed by the slightly earlier firm of Baird and Tatlock which merged with J.J. Griffin & Sons Ltd in 1925. The Baird and Tatlock name was apparently sometimes used after the merger until 1929, when only the Griffin and Tatlock name was used.
For more information about the history of Baird & Tatlock download their story from the net.
