>In the '60's , the guys in the ignition shop called them "rimac" or Rimrac"
RIMAC , there is a NOS one on ebay.
RIMAC was Rinck-Mcllwaine, Inc of Hudson,NY.
They turned into a post office box at some point
rimac seems to be listed as owned by Snap-On in the 70's...(?? suspect)
They seem to have been making clutch and valve tools in the 1930's....