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Box Sextant

Catalogue number:
PH*333796

Inscriptions:
"WARREN-KNIGHT C^O. PHILADELPHIA. MADE IN ENGLAND"

Dimensions:
diameter 3.25 inches

Discussion:
This has a silvered scale that is graduated every 30 minutes from -5^o to +150^o and read by vernier with swinging magnifier to single minutes of arc. The Warren-Knight Company began in business in 1912.

Further Information:

Box Sextant