Sorry to ask such a basic question, but does anyone know the thread
  dimensions for the plugs that Mazda uses in the 13b, I'm looking to make
  an
  adapter for a Fluke PV350 pressure transducer for a compression tester.
  Combined with a peak hold meter it would make a great tool for the shop.
  Thanks,
  C. Smith

  Dang! My thread gage is out at the hangar.

  Cut up an old spark plug for the base.
  Recycle :) Anybody have any old spark plugs they can send
  to C. Smith?

  Paul Lamar


  I'll re-imburse postage.
  Craig Smith
  1754 Peavy Rd.
  Howell, MI 48843


 Paul,
 I'll drop one in the mail today.
 Larry

  Thanks a bunch!
 C. Smith

C. Smith,
what is the threads on the pressure transducer?
Larry


I'll have to get back to you when I get home. I meant to bring
it with me to work, but forgot it.
C. Smith


Spec sheet online at Fluke says 1/4 npt female.
C. Smith

Let me know and I will set up the threads for you.
Larry