Goodison (op.cit.) points out that since both father and son worked from the same address and held successively the same royal appointment, it is somewhat difficult to attribute the many barometers signed Geo. Adams to either with certainty. But Goodison presents evidence to argue convincingly that this instrument was made by George Adams, the Elder

At the time of Goodison's first edition, this barometer was the only example recorded of this design. Another, of similar form, but without a broken pediment cresting and with the 'General State' table printed on paper, was sold at Christie's, 20 May 1971, lot 10

The table of the state of the weather is confined to these two barometers and does not quite agree with the scale on the register ring which was engraved to accompany it. However, because of the meteorological observations and the unusually wide 0.5in. bore tube, allowing a smooth and accurate movement of the mercury, Goodison suggests that Adams intended this barometer more as a scientific than domestic instrument