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 真空系统 英寸的汞 赛斯纳公司类型陀螺吸盖奇
I actually just made it so I could use it here: http://aquafugit.deviantart.com/#/d2psw99 But why not share? :P 窗口更清洁 窗口 清洁 窗口更清洁
house cartoon vacuum cleaner clean vysavac domestic suction rugs Vacuum Cleaner clip art 真空 清洁 真空吸尘器剪贴画
blue cartoon tools tool vacuum cleaner jaim work clean vaccum Blue Vacuum Cleaner clip art 蓝色 真空 清洁 蓝色的真空吸尘器剪贴画