telescope with angled mirrors for seeing over walls or around corners
Found on
http://phrontistery.info/p.html
• (n.) An opera glass or field glass with an oblique mirror arranged for seeing objects do not lie directly before the eye; -- called also diagonal, / side, opera glass.
Found on
http://thinkexist.com/dictionary/meaning/polemoscope/
Po·lem'o·scope noun [ Greek ... war +
-scope : confer French
polémoscope .] An opera glass or field glass with an oblique mirror arranged for seeing objects do not lie directly before the eye; -- called also
diagonal, or side, opera glass .
Found on
http://www.encyclo.co.uk/webster/P/117
No exact match found.
