| Item | Condition | Date |
 Sinclair DM1 - Digital Multimeter |
April 1974 |
| The Fifties | 1950's |
| 1960's |
| 1970's |
| 1970 | 1971 | 1972 | 1973 |
| 1974 | 1975 | 1976 | 1977 |
| 1978 | 1979 |
| 1980's |
| 1980 | 1981 | 1982 | 1983 |
| 1984 | 1985 | 1986 | 1987 |
| 1988 | 1989 |
| 1990's |
| 1990 | 1991 | 1992 | 1993 |
| 1994 | 1995 | 1996 | 1997 |
| 1998 | 1999 |
| 2000's |
| 2000 | 2001 | 2002 | 2003 |
| 2004 | 2005 | 2006 | 2007 |
| 2008 | 2009 | 2010 |
