Relief Valve for Time Ball

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Engineer's drawing titled 'Relief Valve for Time Ball'. Numbered H137.

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ID:	ZAA0638.12
Type:	Drawing
Display location:	Not on display
Creator:	Wailes, George, & Co
Date made:	1879-1892; 1879-92
Credit:	National Maritime Museum, Greenwich, London. Transferred from the Science Museum, London, 1963
Parts:	Drawing Details of Time Ball Apparatus (Drawing) (ZAA0638.1) Drawing (ZAA0638.2) Detail of Ball (Drawing) (ZAA0638.3) Details of Time Ball Apparatus (Drawing) (ZAA0638.4) Section through post of Time Ball Apparatus showing lugs to catch electrical release gear (Drawing) (ZAA0638.5) General Arrangement Releasing gear for Time Ball (Drawing) (ZAA0638.6) Drawing (ZAA0638.7) Drawing (ZAA0638.8) Gearing for Time Ball Apparatus for Mr Varley (Drawing) (ZAA0638.9) Details of Pneumatic Cylinder for Time-ball Apparatus for Mr Varley (Drawing) (ZAA0638.10) Drawing (ZAA0638.11) Relief Valve for Time Ball (Drawing) (ZAA0638.12) Drawing (ZAA0638.13) Drawing (ZAA0638.14) Drawing (ZAA0638.15)