true vertical

true vertical

true vertical
The local vertical or the line passing through the observer and the geographical poles of the earth.
References in periodicals archive ?
It has a proposed total depth of around 2,300 metres true vertical depth below rotary table and is located about 1.
The bubble level has been conveniently situated on the front of the instrument below the display panel so that users can easily adjust the instrument for true vertical position.
To securely and reliably position loads with precision, the hoists include true vertical lift (double-reeved), enclosed in-line gear train with oil lubrication, mechanical load brake, electric motor brake, emergency upper limit switch, reversing controls and thermal overload protection.
RFI is a rare company that has created true vertical integration in the natural ingredient market.
Brisbane, Australia, Nov 30, 2012 - (ABN Newswire) - Texon Petroleum Ltd's (ASX:TXN) Hoskins EFS #3H well was drilled to 17,156 ft measured depth at a true vertical depth of 11,267 ft after which production casing was installed to total depth.
It was spudded on June 22, 2011, and reached a total measured depth at 9,748 feet or 9,561 feet true vertical depth on July 16, 2011.
The 4850 serves many mixing applications and has an optional bottom support assembly to affix longer shafts to the basin floor; The 4860 and 4870 models are for digester mixing and include hydrofoil blades, a patented rotating stabilizer that secures the variable-length shaft to the digester bottom, and a patented leveling flange with gas seal that makes it easy for just one person to adjust the shaft to true vertical.
Deere's patented true vertical lift boom provides greater stability in the work zone (ground level to six feet) with reach at full lift height for center load placement during truck loading operations.
Louis, MO-based firm has developed the SV-1000 Vertical Honing System, a machine containing a new tool stroking system that produces a true vertical stroke.
Patented vertical-lift boom offers a true vertical lift pattern
Based on our experience with receiver operating characteristic curves obtained during a previous study, (7) we determined that a mean deviation of 2[degrees] from true vertical is the best criter ion to identify subjects who have right/left vestibular asymmetry.
The dual lift stations, with two pivot points, allow a roll to be readily maneuvered into true vertical and true horizontal positions.