Used Vintage Propeller Protractor w/ Wooden Box pn 36D2844

Description

Used Vintage Propeller Protractor w/ Wooden Box pn 36D2844. We found this very unique item in a recently purchased inventory. The device comes in a very well-built older wood box. This device is designed to precisely set the wedge angles of the propeller blade surfaces and aircraft control surfaces. This procedure is important because minimal differences in the angle of attack of the propeller blades cause a decrease in work efficiency, an increase in vibrations and an increase in load unevenness. This also applies to helicopters and gyroplanes. The instrument is equipped with a double scale 0-180 degree including a vernier scale enabling it to adjust with an accuracy of 0.1 degree. There are two bubble levels (spirit levels) cross-mounted on the device. The entire angle measurement dial also has a rotating zero point. This allows you to measure angles in different positions of the instrument body (you can zero the instrument at any angle). Please visit our eBay store for more aviation items such as tires, control wheels, pilot and owner information manuals and many other great items.
Representations: This item has been visually inspected and looks good. It is sold As-Is but is guaranteed to be as represented, and your satisfaction is important to us. Airworthiness, and applicability to a specific aircraft or its component, are the responsibility of the buyer.
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