1. 
   Circumferentor
   A circumferentor, or surveyor`s compass, is an instrument used in surveying to measure horizontal angles, now superseded by the theodolite. See also alidade. It consists of a brass circle and an index, all of one piece. On the circle is a card, or compass, divided into 360 degrees; the meridian lin...
   Found op http://en.wikipedia.org/wiki/Circumferentor
   
   
2. 
   circumferentor
   An early 17thC surveying instrument with a central compass surrounded by a brass circle marked with degrees, over which arch several sights to guide the eye. From 1758, English surveyors used it with a theodolite allowing them to measure both horizontal bearings and elevation at one time.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   Circumferentor
   Cir·cum`fer·en'tor noun [ See Circumfer .] 1. A surveying instrument, for taking horizontal angles and bearings; a surveyor's compass. It consists of a compass whose needle plays over a circle graduated to 360°, and of a horizontal brass ...
   Found op http://www.encyclo.co.uk/webster/C/81
   
   
4. 
   Circumferentor
   • (n.) A surveying instrument, for taking horizontal angles and bearings; a surveyor`s compass. It consists of a compass whose needle plays over a circle graduated to 360
   Found op http://thinkexist.com/dictionary/meaning/circumferentor/
   
   
5. 
   circumferentor
   circumferentor A surveyor's compass with diametral projecting arms, each carrying a vertical slit sight.
   Found op http://www.wordinfo.info/words/index/info/view_unit/480/2
   
   
6. 
   Circumferentor
   A circumferentor is a surveyor's instrument consisting of a flat bar with vertical sights at each end and a compass in the middle used for taking horizontal bearings and measuring horizontal angles.
   Found op http://www.probertencyclopaedia.com/browse/GC.HTM
   
   
7. 
   circumferentor
   An early 17thC surveying instrument with a central compass surrounded by a brass circle marked with degrees, over which arch several sights to guide the eye. From 1758, English surveyors used it with a theodolite allowing them to measure both horizontal bearings and elevation at one time.
   Found op http://www.antique-marks.com/antique-terms-c.html
   
   

Tip: double click on a word to show its meaning.