<B>Gunson - G4101 Hi-Gauge Compression Tester Review</b><P>http://tinyurl.com/l43q682 <P><P> Gunson - G4101 Hi-Gauge Compression Tester <P>Calibrated in BAR and PSI (300psi Max)<P>Suitable for petrol engines with 14/18mm spark plug<P>Instructions included<P>
