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TECHWORD
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1993-03-11
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129 lines
Technical words and words used in unusual ways.
Acre 10 square chains. 43560 square feet.
Are Pronounced "air". 100 square meters.
Azimuth North is 0° or 360° and is measured in a full turn to the right.
Blunder A BIG mistake, obvious (once it is shown to you) and correctable.
Brunton pocket transit A sighting compass precise to about 0.5 degree.
Brunton makes the original; there are several imitators. Also known
as Army Artillery Compass when graduated in gradians to confound The
Enemy.
Closure Error When surveying in a loop and making the ending station the same
as the beginning station, the calculated distance between these two
stations.
Compass An instrument with a magnetized needle which points towards magnetic
north. Also a tool for drawing circles and stabbing flies. With a
sighting compass, you can measure the angle between a direction and
Magnetic North.
Corner A point on a property boundary, established to define that boundary.
Declination The angle difference between the compass direction towards
Magnetic North and that towards True North.
Degree abbr. °, unit of angular measurement equal to 1/360 full circle.
Error The difference between a measured value and reality.
Fathom 6 USA feet.
Foot abbr. ', USA feet are defined as 1200/3937 Paris metres.
Furlong 10 chains. 660 feet.
Gradian 400 gradians per full circle, 100 per quadrant.
This makes trigonometric tables which usually end at 90° go to 100.
Gunter's chain 66 USA feet. 100 links of 0.66 USA feet. 4 poles.
Hectare 100 ares. 10000 square meters. 2.47 acres.
Inch abbr. ", 1/12 USA foot.
Land description The written definition of a piece of property.
Legal description A land description typed by an attorney's secretary.
Line A part of a property boundary between two corners.
Link 1/100 part of a surveying chain, or 1/25 pole.
Magnetic North The direction towards the Magnetic North Pole. This is where
the compass needle points.
Metre Paris metres, defined as some huge number times some emission line
of some element. In reality, the distance between a couple scratches
on a metal bar in Paris, France.
Mil 6400 per full circle. Your Army likes this one. It keeps the commies
confused.
Minute abbr. ', unit of angular measurement equal to 1/60 degree.
1°=60'=3600" 1'=60"
Pace 2.64 feet (by definition, 1000 double paces per mile)
Perch 16.5 USA feet.
Plat What professional surveyors call a map.
Pole 16.5 USA feet.
Radian 2π per full circle. About 57.3° Used by mathematicians & those with
a part number stamped on their brains.
Ramden's chain 100 USA feet. 100 links @ 1 foot, for sesquipedalian surveyors.
Rod 16.5 USA feet.
Rood 40 square rods, perches or poles. 10890 square feet, one quarter acre.
Rope 20 USA feet.
Quadrant [North or South] [0° to 90°] [East or West], meaning face the
first direction, then turn the angle towards the second direction.
This made the arithmetic easier in the days before calculators.
Today it keeps the landowners stupid.
Ranger A sighting compass imported by Silva Compass, precise to about 1
degree.
Second abbr. ", unit of angular measurement equal to 1/60 minute.
1°=60'=3600" 1'=60"
Semi For reasons known only to the education burrocracy, schoolchildren are
taught to measure angles in a semicircle, with West as -90°.
Station A place where surveyor's measurements are taken.
Theodolite A surveying instrument which can measure the angle between two
directions, as well as the angle between a direction and Magnetic
North.
Transit A surveying instrument, similar to a theodolite, which can measure the
angle between two directions, as well as the angle between a direction
and Magnetic North. Additionally, the sights can be easily turned
around (transited) to obtain a backsight.
True North The direction towards the North Pole.
Vara New Mexico vara of 2.742 USA feet, Texas is closer to 2.78 USA feet.
You may set any value with User Defined.
Yard 3 USA feet.
° Degree symbol if you can read full ASCII.
' Minute symbol.
" Second symbol.
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