AIA/NAS 908-2013 pdf download GLOSSARY OF OPTICAL TOOLING TERMS
ABERRATION
THE FAILURE OF RAYS OF LIGHT COMING FROM ONE POINT THROUGH A LENS OR REFLECTING FROM A MIRROR.
TO CONVERGE TO ONE FOCUS.
ALIGNING BRACKETA CLAMPING AND/OR ADJUSTING DEVICE WHICH HOLDS AN OPTICAL INSTRUMEN AND PERMITS ALIGNMENT OFTHIS INSTRUMENT WITH THE PREDETERMINED LINE OF SIGHT.
ALIGNMENT LASERA SPECIALLY MANUFACTURED LASER WHERE A LASER TUBE IS MOUNTED IN A CYLINDRICAL HOUSING MACHINEDTO NAS SPECIFICATIONS WHOSE BEAM IS PARALLEL AND CENTERED TO ITS MECHANICAL AXIS
ALIGNMENT TELESCOPE
A PRECISION REFRACTING TELESCOPE CONTAINING CROSS HAIRS WHERE THE PTICAL AND MECHANICAL AXESARE MADE COINCIDENT.
ANGSTROM UNITA UNIT OF MEASUREMENT OF WAVELENGTH OF LIGHT. ONE ANGSTROM UNIT (A) EQUALS ONE HUNDREDMILLIONTH OF A CENTIMETER OR 10- METERS. HELIUM-NEON LASER LIGHT HAS A WAVELENGTH OF 6328ANGSTROM UNITS
AUTO-COLLIMATING LASERTHE AUTO-COLLIMATING LASER IS SIMILAR TO THE ALIGNMENT LASER AND IT CAN BE USED FOR BOTHALIGNMENT AND AUTO-COLLIMATION.
AUTO-COLLIMATIONTHE PROCESS OF COLLIMATING AN INSTRUMENT TO THE IMAGE OF ITS OWN RETICLE REFLECTED FROM AMIRROR. REICLE ILLUMINATION IS REQUIRED. LACK OF PERPENDICULARITY TO THE MIRROR IS SEEN ASREGISTER ERROR BETWEEN THE INSTRUMENT RETICLE AND THE REFLECTED RETICLE IMAGE
AUTO-COLLIMATORAN INSTRUMENT WHICH PEMITS THE MEASUREMENT OF SMALL NGULAR DEVIATIONS OF PERPENDICULARITYTO A MIRROR FROM A LINE OF SIGHT BY MEANS OF ITS OWN COLLIMATED LIGHT.
AUTO-REFLECTION
THE PROCESS OF VIEWING THE IMAGE OF THE OBJECTIVE END OF A TELESCOPE OR A ARGET PLACED AT THEOBJECTIVE END OF A TELESCOPE REFLECTED FROM A MIRROR.
AZIMUTH
ANGULAR ROTATION OF AN OPTICAL INSTRUMENT,IN A HORIZOTAL PLANE, AROUND A VERTICAL AXIS.
BASE PLANE
A PLANE ESTABLISHED BY THREE OR MORE POINTSUSED AS A PRIMARY REFERENCE
BUCKING-INTHE PROCESS OF ALIGNING A TELESCOPE LINE OF SIGHT TO TWO OR MORE SELECTED POINTS OR TARGETS
BUTTOCK LINE(BL)(SOMETIMES CALLED BODY LINE)
BUTTOCK LINES ARE PARALLEL TO THE VERTICAL CENTER LINE OF A STRUCTURE. AND ARE USED TO ESTABLISHDIMENSIONS，EITHER LEFT OR RIGHT OF THE CENTER LINE.
CLAMP，SPHERICAL MOUNTA CLAMPING DEVICE WHICH HOLDS A SPHERICAL MOUNT ON THE MOUNTING BASE
COINCIDENCETHE INTERSECTION OF TWO LINES OR SUPERPOSITION OF A TARGET WITH A TELESCOPE RETICLE.
COLLIMATE
TO AIM TWO OPTICAL INSTRUMENTS AT EACH OTHER SO THEIR LINES OF SIGHT ARE PARALLEL
COLLIMATOR
ANY OPTICAL INSTRUMENT, WHETHER FIXED FOCUS OR ADJUSTABLE FOCUS, CAPABLE OF EMITTING COLLIMATEDLIGHT FROM ITS OBJECTIVE LENS,USED FOR DETERMINING ANGULAR DEVIATIONS.
COLLINEATION
THE PROCESS OF PLACING TWO INSTRUMENTS ON THE EXACT SAME LINE OF SIGHT, SIMULTANEOUS LINEAR ANDANGULAR ALIGNMENT.
COLLINEATOR
AN INSTRUMENT USED FOR DETERMINING LINEAR AND ANGULAR DEVIATIONS FROM THE LINE OF SIGHT
CROSSHAIRS
A CROSS PATTERN ON A RETICLE CENTERED ON THE OPTICAL AXIS WITHIN A TELESCOPE
DIFFRACTIONTHE BENDING OR SPREADING OUT OF LIGHT WAVES AROUND OBSTACLES IN THEIR PATH.
DISPLACEMENTA PARALLEL OFFSET OF A LINE OF SIGHT FROM ITS ORIGINAL POSITION.
DISPLACEMENT TARGET
THE GRADUATED PATTERN OF A OPTICAL TARGET, WHICH IS USED TO DETECT OR MEASURE HORIZONTAL ANDVERTICAL DISPLACEMENT.
DUMPING
MOVING OF A JIG TRANSIT OR THEODOLIE TELESCOPE ABOUT ITS HORIZONAL AXIS AND ROTATION OF THESTANDARD AROUND THE VERTICAL AXIS.