Using a linkage 275px|thumb|Sylvester's Link Fan There are a number of simple linkages which can be used to make an instrument to trisect angles including Kempe's Trisector and Sylvester's Link Fan or Isoklinostat.
Using a linkage 275px|thumb|Sylvester's Link Fan There are a number of simple linkages which can be used to make a.n instrument to trisect angles including Kempe's Trisector and Sylvester's Link Fan or Isoklinostat