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English inventions
Mechanical calculators
Analog computers
Logarithms
Obsolete scientific instruments
17th-century inventions
1620 beginnings
1620s introductions
1622 beginnings

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Page ID28743

Revisions0

Words6,884

OriginImported

CreatedJun 17, 2026, 4:31 AM

UpdatedJun 17, 2026, 4:38 PM