Label Type
curated descriptionLabel
Sextant
Toizaki Mfg. Co., Tokyo, Japan
Unknown Date
Sextants use mirrors and a moveable center arm to measure the angle between two objects. The user looks through the eyepiece and adjusts the moveable arm until the two objects being measured are both present in the eyepiece. The angle between them is then measured using the degree markings on the arc at the bottom of the arm.