slide rule collections as of 2018-10-26 Player     Number Cairnarvon     1,273 mhwombat     1,010 Artie Effham     79 ChevellemanX     74 Misha_Z     74 Ms Bus Driver     70 MrSqueezeBox     68 PolyesterMan     61 whizdad     57 miStreSS of the obviouS     54