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1.
A review of George Graham's classic escapement, or, Dead-beat by design / by Guy D. Aydlett. by Series: Bulletin of the National Association of Watch and Clock Collectors. Supplement ; ; 8.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publisher: Columbia, Pa. : National Association of Watch and Clock Collectors, 1973
Other title:
  • Dead-beat by design
Availability: Items available for loan: Jost Bürgi Library (2)Call number: TS548 .A97 1973, ...
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2.
The square recoil escapement : a special case / Guy D. Aydlett. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publisher: [Place of publication not identified] : [publisher not identified], [1975]Copyright date: ©1975
Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS548 .A92 1975.
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