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Tire Pressure Gauge Keychain Ring Mini Simple Portable Digital Lcd 150 Psi

Mini portable design tire pressure gauge keychain Large LCD display for easy reading High precision and repetition Four kinds of unit for measuring pressure Manual ON/OFF and auto power off Specifications: Range: 3-150 psi or 0.20-10.0 bar or 20-999 kpa or 0.2-10.0 kgf/cm? Display: 21 x 10 mm LED display Power: CR-2032 3V lithium battery Shell Material: ABS Plastic Net Weight: 40 g / 1.41 oz Size: 61 x 33 x 11 mm / 2.4 x 1.3 x 0.43 inch Instructions: 1. Press the "ON/UNIT/OFF" button wait 3 seconds for "0.0" psi or "0.00" bar or "0.00" kgf/cm? 2. Press firmly the tire gauge with tire nozzle valve and make sure there is little air leakage 3. Hold for about 2 seconds and read pressure from the LCD Display Screen. Helpful Hints: 1. Check tire pressure before driving when tires are cold 2. To clear the gauge, use a soft damp cloth. Do not immerse in, or spray with water or other liquid cleaner 3. In order to get a good seal, put the tire's air nozzle was up or off to the side. It's best when the nozzle s around the 6 or 7 o'clock position so that you can firmly press the gauge straight down. 4. Standard Tire Pressures [Only for reference]: 30 to 35 psi for car; 50 psi in the front and 60 psi in the back for truck; 80 to 130 psi for road bikes, 30 to 50 psi for mountain bikes, 50 to 70 psi for hybrid bikes (1 psi = 0.0689476 bar = 413.68542 kpa = 4.2184173 kgf/cm?)

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