1) Plate 2) Pleximeter 1) Pleximeter 
• (n.) See Pleximeter.
An oblong flexible plate used in mediate percussion by being placed against the surface and struck with the plessor. ... Synonym: pleximeter, plexometer. ... Origin: G. Plesso, to strike, + metron, measure ... (05 Mar 2000) ... 
Ples·sim'e·ter noun See Pleximeter . 
Type: Term Pronunciation: ple-sim′ĕ-tĕr Definitions: 1. Historic term for an oblong flexible plate used in mediate percussion by being placed against the surface and struck with the plessor. Synonyms: pleximeter, plexometer