Bonjour Beatrice Robertson.  In answer to your query about music
box articles, may I ask a question to the English speaking MMD
contributors.

Some early carilion cylinders (usually metallic), and some early very
good music boxes, especially by Francois Nicole at the beginning of the
XIXth century, were marked with a regular net of horizontal and
vertical lines to facilitate the implantation of pins.

It is usually called in English "rigid notation cylinders", which seems
to me a bad denomination, as it is not the music which is rigid, but
only the marking of the cylinders.

Would not there be a better denomination, as Arthur Ord-Hume himself
comments in his last book "The Musical box", p 75 ?

Some suggestions : reference grid, metrically marked cylinder, cylindre
"quadrille", checkered or squared cylinders, etc.

Best regards,

Philippe Rouille (Paris, France)