Billingsley Magnetics
2600 Brighton Dam Road
Brookeville, Maryland 20833, U.S.A.

Bruker Analyt. Messtech. Gmbh
Wikingerstrasse 13
D-7500 Karlsruhe 21, Germany

Cochranes of Oxford Ltd.
Witney
Oxford OX8 5NY, UK

Danfysik A/S
Mollehaven 31A
DK-4040 Jyllinge , Denmark

Dantronic AG
Bächlerweg 3
CH-8802 Kilchberg, Switzerland

Donart Electronics, Inc
 P.O. Box 27
   McDonald, PA 15057 USA

Drusch GmbH
Postillionseck 18
D-21271 Hanstedt, Germany

Dr. BROCKHAUS MESSTECHNIK GmbH & Co KG
Gustav-Adolf-Str. 4
D-58507 Luedenscheid, Germany

Eckel Magnetmesstechnik GbR
Am Teich 4
D-19348 Grenzheim

GMW Associates
P.O. Box 2578
Redwood City, CA 94064, USA

Group 3 Technology Ltd.
P.O.Box 71-111
Rosebank, Aukland 7
New Zealand

Hirst Magnetic Instruments Ltd.
Tesla House, Tregoniggie, Falmouth
Cornwall TR11 4SN, U.K.

Institut Dr. Foerster
Grathwohlstrasse 4
D-7410 Reutlingen, Germany

Lake Shore Cryotronics Inc.
575 McCorkle Blvd.
Westerville OH 43082, USA

Magnet-Physik Dr. Steingroever GMBH
Emil-Hoffmann-Strasse 3
D-5000 Koeln 50, Germany

MEDA, Inc.
485 Spring Park Place, Suite 350
Herndon, VA 20170, USA

Metrolab Instruments SA
110, ch. Pont-du-Centenaire
CH-1228 Geneva, Switzerland

Oersted Technology
19324 SW Mohave Ct.
Tualatin, OR 97062, USA

Oxford Instruments Ltd., UK
Oxford Instruments plc
Old Station Way
Eynsham, Witney, Oxfordshire  OX8 1TL, UK

Resonance Research, Inc.
10 Cook Street
Pinehurst Business Park, Billerica
Massachusetts 01821, USA

Schonstedt Instrument Company
1775  Wiehle Avenue
Reston
Virginia 20190, USA

Sentron AG
Baarerstr. 73
CH-6300 Zug, Switzerland

TECO René Koch
Chemin des Laurelles 56
CH-1196 Gland, Switzerland

Walker Scientific
17 Rockdale Street
Worcester, MA 01606, USA

WUNTRONIC GMBH München
Heppstrasse 30
D-80995 München, Germany