This is from my husbands workshop - sorry I don’t know what it is from, possibly a Seth Thomas.

Measurements as far as I can tell are:

Sound block :2 1/2”long 1 1/2” wide 1 1/2” high

Rods 1 x 6  and 1 x 5 1/8” long.

I’ll do my best to answer questions.

PLEASE NOTE THERE IS ONE ROD MISSING.