Schaffner Instruments 1996 Short Form Catalog.

Anritsu Wiltron 1996 Electronic Measuring Instruments Catalog

Sensitive Research catalog #62 Electrical Measuring Instruments Permanently Prec

Anritsu Electronic Measuring Instruments Catalog 2001

Panasonic Electronic Measuring Instruments Catalog 1987

Anritsu Electronic Measuring Instruments 1999 Catalog

Shiba Soku Electronic Measuring Instruments Vol. 10

Philips Catalog ~ Test and Measuring Instruments Catalogue 1974