Zeiss Precision Gauge Blocks

Published in Spring 1996  Zeiss Historica Journal

Author: Nicholas Grossman

See Pages 6 – 7.

Carl Zeiss Jena was always involved with precision measurement and one of their products was a set of Johanneson Gauge Blocks which were “a set of blocks ground to an accuracy of one hundred-thousandth of an inch or better. These solid metal blocks were a crucial tool in the first half of the  20th century in creating the standard for a product of a precise size.

To go to the Journal itself, click on the year 1996 in the first line above.