LAND SURVEY TERMS “X”, “Y” AND “Z”
GLOSSARY OF U.S. BUREAU OF LAND MANAGEMENT SURVEYING AND MAPPING TERMS
Land Survey Terms “X”, “Y” and “Z”. A convenient source for our clients and website visitors
X
X (Land Status Records) – Exchange(d).
XDS eXternal Data Source
XMI XML Metadata Interchange
XML eXtensible Markup Language
XWD X-Window screen dump
XMP Extensible Metadata Platform (format)
X AVIS – See AXIS.
X PARALLAX – See ABSOLUTE STEREOSCOPIC PARALLAX.
X TILT – The component of photograph tilt about the X axis; same as roll.
Y
Y – The latitude or distance along the north-south axis in a coordinate system.
YK Yukon
YARD ROD – A level rod graduated in 100 backsight in feet. yard so that the sum of three hair reading equals the foresight or YAW – 1) Rotation of an aircraft about a vertical axis causing deviation from flight line or crab. 2) Rotation of a camera or coordinate system about the Z axis. (Kappa K).
Y PARALLAX– The difference of the perpendicular distances of the two images of a point from the vertical plane containing the air base, indicating tilt in either or both photographs or of a difference in flight height and is confusing to a stereoscopic examination of the pair. V TILT – Component of photograph tilt about Y axis. Also (TIP).
Z
Z AXIS – See AXIS, Z.
ZCTA ZipCode Tabulation Area
ZIMAS Zoning Information and Map Access System (Los Angeles, Calif.)
ZMA Zone Map Automation (Los Angeles, Calif.)
ZPS ZEH plotting software
ZTS – Zoom Transfer Scope.
ZEISS PARALLELOGRAM – A mechanical analog of the rays to a photo image from two photographs. The parallelogram allows mechanical separation of the ray intersection. See BASE INSIDE and BASE OUTSIDE.
ZOOM STEREOSCOPE – A binocular viewing instrument with a specially designed optical system that features independent variable enlargement in each eyepiece to enable common-scale stereoscopic viewing of corresponding images in overlapping photographs at different scales.
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