Sounds like a transformer character, but this is a rare fuse adapter I dug out today for a fellow doing some research. I know most of even this crowd don't get excited about these, but I still thought I'd share it with my BFFs here:
It is the exact one as shown on Jones, top of page 78. I unscrewed it from my 60pdr Parrott case shot shell.
Attached are some pictures.
Dimensions are:
Head flange diameter: 1.85:
Diameter at threads: 1.50”
Threads per inch: 12
Length: 2.36”
Weight: 13.12 ounces
OK, here is the shell it unscrewed from which I think I showed before:
