Sujet

Protractor, Model 3-B, United States Army Air Force. Creator: Unknown.

Légende

Black metal navigation tool with two protractor arms and ruler

Crédit

Photo12/Heritage Images/Heritage Art

Notre référence

HRM21A88_480

Model release

NA

Property release

NA

Licence

Droits gérés

Format disponible

90,5Mo (3,6Mo) / 55,0cm x 41,2cm / 6496 x 4872 (300dpi)

Mots clés

technology education country space color war location Armed Forces maths mathematics concept navigation arithmetic navigational instrument space travel PROTRACTOR Army navigational device warfare Air Force United States of America Colour Smithsonian Institution US Air Force National Air and Space Museum Educational Institution air and space museum American America USA mathematical instrument scientific institution object united states Unknown Heritage Art United States Army Air Forces NASM EQUIPMENT-Mission Support Non-magnetic white metal alloy (most likely aluminum alloy) black wrinkle finish coating