The object is a rack holding 10 vacuum tube assemblies, but only four of the positions are wired. Three of these are occupied with vacuum tube assemblies, one seems to be missing. Each assembly contains two vacuum tubes. All tubes are present. The three assemblies have hand labeled paper tags saying "E14-13-n" where "n" indicates the slot the assembly is in. The object also has 8 BNC connectors and 2 terminal strips with 11 terminals each.