All IDNIYRA Specifications are published in the IDNIYRA Yearbook (available from the class Treasurer):
The current Specifications are also available here:
Please note! ***
The IDNIYRA Specifications shown
on this site are not up to date,
and do not include the Specification changes made during 2009.
Please refer to this page to see the Specification changes made.
October 1, 2010 Technical Comittee Interpretations:
In addition to the current printed Specifications, the IDNIYRA
Technical Committee occasionally makes Official Interpretations
to the Specifications. There interpretations are printed along
with the Specifications in the yearbook. Check here for recent
the Official Interpretations:
Technical Committee Interpretations
The Technical Committee has also issued some "recommended practices"
for measuring DN's against the Official Specifications. Check
these recommendations here: