Features Specifications:Sell Freon pressure gauge  Freon pressure gauges are used in refrigeration environment Dial features R-12, R-22 and R-502 OR R-304 scale  Recalibrator and restrictor as standard features Sizes: 60 and 100mm Material: SS Tube: phosphor bronze Socket and movement: brass Connections: 1/8 and I/4 inches NPT in LM bottom dependent on model and size, bottom, back, left and right side Available ranges: 30-inch Hg VAC to 150 psi retard to 350 psi: 0-500psi Window (lens) material: threaded polycarbonate lens Accuracy: 2.5 Options and accessories: custom dial, metric scale, DIN 2, 5 accuracy, special connections