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Prior to the introduction of what we now term as
Gauge Blocks, the earliest type of length standard was known as the Polhem
Stick so named after the Swedish inventor Christopher Polhem. The exact
date of his invention is unknown, what is known is that sticks of this
type were in use prior to 1700. This in itself is somewhat unusual as
at that time there was no requirement for the early locksmiths, clockmakers
and the like to make anything other than parts that fitted together on
an individual basis as no interchangeability was ever considered.
The mass production armaments factories in the 19th century and the requirements
of interchangeability of, in particular the firing mechanism that often
failed in the battlefield, lead to the inevitable introduction of gauges
for all stages of manufacture. Unfortunately this also resulted in the
production of many thousands of gauges and so the problem of interchangeability
remained, in that there was no record of which gauge had been used to
produce what firing mechanism for what weapon. This was by no means a
problem that was limited to England and Europe in the United States of
America the problem was highlighted during the Wars of Independence and
the Civil Wars between the North and the South.
In 1894 the Swedish State placed a large order for the manufacture of
Rifles from the German Mauser Factory. The weapons ordered were to be
inspected by a commission set up by the Swedish State and a member of
this commission was the armourer inspector Carl Edvard Johansson. When
C.E. Johansson saw how things were arranged at the Mauser Factory, he
realised that many thousands of gauges would be required to be manufactured
before the Rifles could be made in Sweden. So upon completion if his commission
in 1896 and during his return journey home he had the opportunity to consider
and idea that he had for a relatively small number of gauge blocks that
might possibly be made so that in combination with each other they would
provide all the measurement figures required in the manufacturer of rifles.
Thus the revolutionary idea of - The Combination Gauge Block Set - was
conceived.
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