Thinking about buying a compression tester. I already have
a regular one but I want to get into this area with the rotary. Have
checked rotarycompressiontester,com web site but want to see what
else is out there. Analog, digital, less expensive, etc.
Please help, thanks

 

all things considered the rotarycompressiontester.com unit is actually a pretty good deal (especially compared to how much the OEM Mazda units go for).

Still, if you don't need that kind of accuracy and just need to ballpark you can use a normal piston compression checker.

 

just remember to remove the schrader valve.