Gen Rad Impedance Measuring Instruments Catalog.

Philips Test & Measuring Instruments 1985/86 Catalog

Sensitive Research catalog #62 Electrical Measuring Instruments Permanently Prec

Goldstar ~ Test and Measuring Instruments Catalog 1992/1993 Oscilloscopes

Philips Catalog ~ Test and Measuring Instruments Catalogue 1974

1941 FEDERAL Precision Measuring Instruments, Providence, RI Catalog No. 41

Anritsu Electronic Measuring Instruments Catalog 2001

Genrad Catalog.