With both instrunets in the leather case [which is intact completely and in excellent condition] it measures approx 6 1/2 inches in diameter and 5 1/4 inches in diameter by 4 inches deep. These instruments have been in the same family for the last 150 years or so and the entire estate has stayed intact. Worth a try anyway.
The item “FINE CASED STANLEY 1790 COMPENSATED BAROMETER & COMPASS WITH COVER” is in sale since Tuesday, November 25, 2014. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “mandyacoma8udg” and is located in Suwanee, Georgia. This item can be shipped worldwide.