This Handy Altimeter + Barometer Mounts In Seconds To Windshield Or Top Of Dashboard. Altitude In Feet. Levered Suction Cup Plus Sticky Pad Hold Tight. Altimeter Is Held In Place By 4 Magnets, But Is Instantly Removable For Toting In Pack Or Pocket. Altitude Range: 0 To 15,000 Ft. Analog Design; Battery Free. Includes Weather Trend Indicator. Measures Barometric Pressure In Inches Of Mercury.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }