Menu
 Introduction
 Catalogue
 Essay
 Handlist
 Museums
 Makers
 Bibliography
 Places
 Conventions
 Articles
 Credits
 Glossary
 Help
 Search
 Index
 Glossary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 

202 to 209 of 227 glossary terms
theodolite: surveying instrument for measuring horizontal angles, and perhaps vertical angles, see article on the theodolite.
theodolite and sundial: an instrument combining the functions of a sundial and a theodolite.
throne: part of an astrolabe, connecting the instrument to the suspension shackle, see article on the astrolabe.
triangulation: surveying technique involving the measurement of a baseline, the location of other stations by taking angles from either end, and perhaps the extension of the survey through the addition of further triangles.
triangulation instrument: instrument with three jointed arms with scales for surveying or range-finding, see article on the triangulation instrument.
trigonus: triangular element in the type of altitude dial known as the 'organum Ptolemai'.
tripod base: base of a tripod (three-legged support) on which to stand an instrument.
tripod legs: legs of a tripod (three-legged support) on which to stand an instrument.
Previous Next || First Last 
Show 5 | 10 | 20 | 50 | 100 | 227 terms at a time
|| Introduction || Essay || Museums || Bibliography || Conventions || Credits || Privacy || Help ||
|| Catalogue entries || Handlist || Makers || Places || Articles |Glossary |Search || Home ||