Aircraft Instruments and Their Maintenance Course Book, 1941 Sunderland all in good condition

all in good condition

Here is an instrument that you've probably not seen before

slips into the frame on the front of the panel

diluter regulator typically used in fighter aircraft) used with oxygen mask A-8B

Aircraft Instruments and Their Maintenance Course Book, 1941 Sunderland all in good conditionThis is an original course book from the American School of Aircraft Instruments. The massive, 2 inch thick book includes 25 lessons covering all aspects of aviation instruments known in 1941. It addresses theory of operation (when necessary), construction, servicing, and maintenance of all types of instruments in use at the time. Includes text, diagrams, illustrations, and tables. The course material was prepared in cooperation with the leading