This is another inheritance from my grandfather. It appears to be some sort of testing device/clock. As you can see from the attached photos, it is mounted on an oak box, with a slide-out bottom. There are several shaped metal pieces, a piece of wood with a metal wrap, and an envelope enclosed with “special” bulbs inside. There is a dual-lead cord that has a bob on the end with a button that can be depressed on the end. I believe the bulbs can be screwed into sockets that are internally mounted on either side of the clock, as the thread pattern appears to be the same. I’ve yet to open the clock part up to see what’s inside that part. Does anyone know what this might be, or what the purpose of it is? Please see the attached photos for more detail.