The NEW Fowler-Trimos V3 vertical measuring instruments have been developed for the most difficult workshop environments. Manufactured in their entirety in Switzerland, they guarantee a robust, precise and reliable product in the long run. Technical Data... Measuring Range: 28" / 711mm Range with Probe Inverted: 31.9" / 8128mm Max. Permissible Errors: 0.00032" / 0.008mm Repeatability (2s): 0.00008" / 0.002mm (Ì÷ 0.00016" / 0.004mm) Frontal Squareness Deviation: 0.0006" / 0.015mm Resolution: 0.00005" / 0.001mm Measuring Force (N): 0.75 / 1.5 Measuring Insert with 4mm Ruby Ball 8mm Probe Holder Elbow Battery Life (Hrs): 40 Interfaces: USB / RS232 Air Cushion: NO Features include... Extremely easy to use "Black mask" display with user friendly functions Electronically adjustable measuring force Vast range of accessories All adjustments possible without tools Cast iron base for optimal stability Measures heights, diameters, perpendicularity, centerlines, Min/Max/Delta Accessory measuring probes up to 340mm in length available and provide excellent repeatability. Check Out Our Informational Video About Fowler Trimos Below: