Rear bearing cap

The rear cap of H3’s caged roller bearing removed for display. In the poor conditions at sea it was important to protect this very sensitive part from the ingress of dirt and dust and Harrison designed it to be virtually sealed with these caps.

Object Details

ID: ZAA0036.3
Type: Rear bearing cap
Display location: Not on display
Creator: Harrison, John
Date made: 1757
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 62 x 67 x 11 mm
Parts: H3 (Marine timekeeper)

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:

Tel: (during Library opening hours)

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