Apparatus for testing gas, liquids and solids; Calipers for measuring trees; Coordinate measuring machines; Fiber optics; Force measurement products, namely, digital force gauges, digital torque gauges and manual and motorized test stands used therewith sold as a unit with the gauges; Height measuring instruments; Inverters for power supply; Measuring apparatus, namely, sizers for rings, mouth guards; Pressure sensors; Slide calipers; Snap gauges; Surface roughness testing machines and instru...