ASME also provides a level I and level II training for GD&T. If certification is your ultimate goal it might be wise to look into these courses. The link below should get you to the information.

http://www.asme.org/cns/departments/AccredCertif/GDTP.htm

Best regards,

Terry W. Prather
Metrologist


BOSCH
AIRFLOW SYSTEMS GROUP
1613 Progress Dr.
Albion, IN 46701
Phone: (219)636-4299
Fax: (219)636-1106
E-Mail: mailto:terry.prather@us.bosch.com