<b>Specification:</b><br><b>Pressure gauge:</b> Positive pressure range 0-14psi,Negative pressure range 0-25inHg<br><b>Connection joint:</b> M12x1.25, M18x1.5<br><br><b>Package include:</b><br>1 x pressure gauge<br>1 x high-pressure hose<br>2 x connection joint<br>2 x clamps<br>1 x users manual. <br><br><b>NOTE:</b><br>The pointer of the gauge can be manually calibrated. The Gauge may be impacted during transportation, so that the pointer may be not in the initial state #0. You can disassemble the shell and manually adjust it to #0 with a screwdriver, which will not affect its measurement results.