The Z-Series line of instruments feature a clean, full pointer for easy legibility and a 270 degree sweep dial face on the mechanical gauges. All of our Z-Series gauges fit into a compact 2 1/16 inch mounting hole, making them the perfect choice for any application. Mechanical oil pressure gauge reads 0 to 100 psi and has a 1/8 NPT male fitting on the back. Includes nylon tubing kit for easy hookup.