WWII Original Japanese Laboratory Barometer Wood Case with USF Permision Papers

Description

Original Laboratory Barometer in a Wood case with the original letter (and a carbon copy) certificate of permision for a US Colonel to take it. I don't know if it works or not.
The Japanese Label on the Barometer translates:
Number 816
Showa 17, February --à Showa era 17= 1942
Yanagi Seisakusho Co., Ltd.
A similar barometer was seized from the desk of Vice Admiral Michitaro Totsuka by Marines during their occupation of Yokosuka, Japan. It was then presented to Major General Lemuel C. Shepherd, Jr. and is now in the Headquarters Artifact Collection, Naval History and Heritage Command.
The contents of the letter are:
US Forces Headquarters
5250 Technical Intelligence Composit Company
Office of Assistant Chief of Staff, G-2.
United States Forces, Western Pacific
C-E-R-T-I-F-I-C-A-T-E
The letter certificate states
Pursuant to the provisions of paragraph 1, Circular 58, AFPAC, 4 Sep 45, the bearer, Lt Col W. R. Tyson, is entitled to retain the following items of Japanese materiel:
1. Labratory Barometer.
It is Signed:
Harry E. Carnes
Major, MC
Ch Medical Analysis sect.