Compression tester Where to buy one for a good value?

[Mirage]

I'm currently looking to buy a new compression tester so that i can get some good accurate numbers on my 95 shee (never rebuilt to my knowledge), does anyone have some good recommendations? My main concern is accuracy and value, i'm looking for cheap say $50 or less if possible. Also could someone help me out as to what size adapter (mm) i will need to thread the gauge into the stock head? Thanks:)

[Bansh-eman]

sears has a kit for like 50 bucks. you need to make sure which ever you get that it has the long threaded 14mm adaptor

[magz]

http://www.sears.com/shc/s/p_10153_12605_00947089000P - 59.99 - probably pretty accurate

 

http://www.sjdiscounttools.com/mitmv5532.html - 85 bucks but is most accurate -