This is a Gyro Suction Gage used in many Cessna Airplanes. Normal Gyro Suction values are 4.1 to 5.4 inches of mercury. 陀螺吸 真空系統 英寸的汞 賽斯納公司類型陀螺吸蓋奇
I actually just made it so I could use it here: http://aquafugit.deviantart.com/#/d2psw99 But why not share? :P 視窗更清潔 視窗 清潔 視窗更清潔
house cartoon vacuum cleaner clean vysavac domestic suction rugs Vacuum Cleaner clip art 真空 清潔 真空吸塵器剪貼畫
blue cartoon tools tool vacuum cleaner jaim work clean vaccum Blue Vacuum Cleaner clip art 藍色 真空 清潔 藍色的真空吸塵器剪貼畫