Mr Austen made his will in 1770,and never altered it. He left everything to his wife and she was to be its sole executrix.
JA sent Frank a sundial/compass and a small pair of scissors. Very practical gifts but for a sailor the compass and sun dial had more personal siginificance,I submit.
Here is an example of the type of instrument JA sent to Frank, just for ilustrative purposes. This is a late 18th century compass and sundial made of ivory.