For future messages like this, it would help if you told us whom you have tried
already.

To the best of my knowledge, 4" is the largest size you can get, but I hear
that there is a shortage of capacity right now. Anyhow, some suppliers are:

Sawyer Research Prod., Inc.
35400 Lakeland Blvd.
Eastlake OH 44094
Tel 216-951-8770
Fax 216-951-1480
Janet Radwanski, x207 sales

P. R. Hoffman
321 Cherry Street
Carlisle PA 17013
Tel 717-243-2011
Fax 717-243-1672
Ken Casey, Pres.; Galen E. Martin, sales mgr

VALPEY-FISHER Corp.
75 South Street
Hopkington MA 01748
Tel 508-435-6831
Fax -5289
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           John R. Vig
           U. S. Army Research Laboratory
           Attn: AMSRL-PS-ED
           Ft. Monmouth, NJ 07703-5601, U.S.A.

Telephone: 908-427-4275,    FAX: 908-427-4805
Internet: [email protected]
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