Thanks. Seems like a usful piece. Sent me down a rabbit hole.Top right is a spindexer .
That doall spin fixture must take collet or something?The goldish pieces in the upward left corner and the chuck with the blades in it are for a drill grinder setup. By the color I’d say darex. Top right is a manual spin fixture. Bottom is a motorized spin fixture typically used on a surface grinder to grind cylindrical parts.
Interestingthe other parts look like a tool sharpener.
maybe for end mills. The one with the pins and eccentric seems like for a holder for doing drill bits.