[Amps] Threads - was idiocy - perhaps it still is

[N5bbc at aol.com]

After restoring  A MGTC, MGTD , MGTF, MGA twin cam  fixed head coupe' , early 
MGB ,late MGB and a MGBGT V8 ,Jag  XK120  fixed head coupe and a Mini 
Cooper-S, I decided there are  no standard threads. Don't  forget the Whitworth.
 Have FUN.
  .Ed  N5BBC