International Crystal Laboratories
International Crystal Laboratories
11 Erie Street
Garfield, NJ 07026
Phone: 973.478.8944
Fax: 973.478.4201
Email: ICLMail@internationalcrystal.net
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Comes with certificate of traceability to NIST 1921b frequencies. Set of 2 films, each mounted to 2' x 4' cardstock holder