The Livrustkammaren museum is in Stockholm, Sweden. The gun itself dates back to nearly 1580 BC, and it is a bellows gun. It has a massive pressure gauge.
New Delhi, India. The National Railway Museum's 'Fairy Queen' dating from 1855 is regularly in steam for special passenger services. The Smithsonian's 'John Bull' of 1831 was restored to working order for its 150th birthday but is currently a static exhibit. 'Lion' of 1838, now at the Museum of Liverpool, could be restored to working order if required (it was in the film 'The Titfield Thunderbolt').
Lyman House Memorial Museum is the most oldest. It was built in the 1830's. This museum is the most oldest in the island of Hawaii!
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Bishops museum
alexandria museum.
Oldest still in use?Oldest still working, but not used?Oldest complete, but not working?Oldest portion of a computer that at one time was used?Oldest computer that we have documents for but no parts?Oldest computer historically recorded, but lacking parts and documents?Oldest computer not recorded in history, but for which incomplete parts or documents have been discovered?etc.?What are you looking for? "Oldest" needs clarification.Also what kind: digital, analog, hybrid; electronic, electromechanical, mechanical?
Ashmolean museum in Oxford
Britain's earliest mechanical clock can be found at Salisbury Cathedral in Wiltshire. It dates back to the 14th century and is one of the oldest working clocks in the world.
London museum
Indian Museum, Kolkata
The oldest sundial is in a museum in Berlin. Approximately 1500 BCE
The web address of the Florida'S Oldest House Museum is: www.oldesthouse.org