All Knows Designing Machine by William Irwin
This is Andreas Konkoly Supermodel no. 11.
This model (or any other simple hand operated Meccanograph model) trains the person to rotate steadily in one dirction only, usually clockwise, in order to obtain a neat result.
Full building instructions are available in Andreas Konkoly Supermodels, Volume 3, published by Runnymede Meccano Guild.
