Ensure the unit is on a level, vibration-free surface. Many Cal6B units were designed to be "flush-mounted" into a desk or switchboard.
The Definitive Guide to the Cal6B Calculagraph: Operation, Maintenance, and History cal6b calculagraph manual
Install a . Ensure the ribbon passes between the type wheels and the platen. Cleaning the Mechanism Ensure the unit is on a level, vibration-free surface
Today, the Cal6B is highly sought after by horologists and industrial decorators. Its "clack-clack" sound and hefty mechanical feedback provide a tactile connection to the history of labor and telecommunications. cal6b calculagraph manual
Disclaimer: This guide is for educational purposes. Always disconnect the power source before performing internal repairs on vintage electrical equipment.