map measurer Map measure of the month: Elliott Brothers opisometer Elliott Brothers were one of the foremost instrument makers of the 19th and 20th centuries. The two opisometers looked here are prime examples of their craft Map measure of the month: Elliott Brothers opisometer
map measurer Map measurer of the month- Stanford’s opisometer An opisometer is a curious instrument. As soon as you […] Map measurer of the month- Stanford’s opisometer
Three Points of the Compass 