Milmega / Thermo Voltek Corporation 1997 Catalog.

Ectron Corporation 1997 Short Form Catalog.

Bird Electronic Corporation 1997 RF Power Measurement & Management Catalog.

Newport Corporation Photonics 1997/98 Catalog.

Vintage 1979 Liquid Controls Corporation Meters and Accessories Catalog 102E

Barnstead / Thermolyne Corporation 1997 / 1998 The Water Book Catalog.

Texscan Corporation Catalog.

Pro-Log Corporation August 1985 Short Form Catalog.