
• (n.) A machine for use in making topographical maps. It is operated by being pushed across country, and not only records distances, like the perambulator, but also elevations.
Found on 
http://thinkexist.com/dictionary/meaning/orograph/
 Or'o·graph  noun
Or'o·graph  noun [ Greek ... mountain + 
 -graph .] 
 (Surveying) A machine for use in making topographical maps. It is operated by being pushed across country, and not only records distances, like the perambulator, but also elevations. 
Found on 
http://www.encyclo.co.uk/webster/O/33

orograph, oreograph A machine for use in making topographical maps.  It is operated by being pushed across country, and not only records distances, like the perambulator, but also elevations.
Found on 
http://www.wordinfo.info/words/index/info/view_unit/1511/2
  No exact match found.