Dixon® Gauge, Standard Dry, 0 to 160 psi, 1/4 in, 2 in dial dia, +/- 3-2-3 % Accuracy, -40 to 150°F, Center Back Mount, ABS Case. Dixon® GC230 Standard Dry Gauge, 0 to 160 psi, 1/4 in Connection, 2 in dial, +/- 3-2-3 %