6 3/4 , range 10-0-10 degrees, black curved metal with glass tube

---

Size: 3648px × 3648px
Photo credit: © Heritage Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -magnetic, 20th, air, alloy, america, american, art, aviation, century, close, close-, color, colour, company, country, device, education, educational, flight, glass, gradient, heritage, inclinometer, institution, instrument, instruments-flight, liquid, location, management, measurement, measuring, metal, museum, nasm, national, navigation, navigational, object, panel, plaster, scientific, smithsonian, space, states, taylor, technology, united, unknown, usa, white, yellow