Tektronix Product Catalogs
1970
1973
1974
1977
1978
1981
1987
1988
1989
1990
1991
1991-1992 Supplement
1993
1994
1995
1996
 1997/1998
 1998/1999
 2000
2001
2002
2003

Hewlett-Packard

1973
1977
1985
1987
1990
1993
1996
1998
1999
2001
 2002
 2003

Fluke/Philips

1988
1990