Section through post of Time Ball Apparatus showing lugs to catch electrical release gear

Engineer's drawing titled 'Section through post of Time Ball Apparatus showing lugs to catch electrical release gear' . Numbered H109.
Close

Your Request

If an item is shown as “offsite”, please allow eight days for your order to be processed. For further information, please contact Archive staff:

Email:
Tel: (during Library opening hours)

Click “Continue” below to continue processing your order with the Library team.

Continue