What the hell is this?

[AlD]

Hi--recently I purchased a bunch of tools from the estate of a clockmaker/machinist, and this odd thing was in it. The long piece is just over 8" long, the plug thingies are 9/16. The items sparkle, but nothing flakes or comes off, although it looks like it might. No branding or ID of any kind on it.

Any idea what these items may be?

Thanks in advance.

Al