Repeating circle tommy bar

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Repeating circle tommy bar.

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ID:	NAV0089.9
Type:	Repeating circle tommy bar
Display location:	Not on display
Creator:	Unknown
Date made:	Unknown
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Diameter: 7 mm;Overall: 42 mm
Parts:	Borda circle (Repeating circle) Reflecting circle box (NAV0089.1) Repeating circle handle (NAV0089.2) Repeating circle bracket with handle (NAV0089.3) Repeating circle index shade (NAV0089.4) Repeating circle index shade (NAV0089.5) Repeating circle index shade (NAV0089.6) Repeating circle horizon shade (NAV0089.7) Repeating circle horizon glass (NAV0089.8) Repeating circle tommy bar (NAV0089.9) Repeating circle box key (NAV0089.10)