aeronautical octant

INSTRUMENTS - OCTANTS
Willson Telescope; Brandis & Sons, Inc.
USA, NY, Brooklyn
overall: 4 1/4 in.

Aeronautical octant; metal frame, scale -5 to +110; index arm stamped "AERONAUTICAL OCTANT/ MARK 1 MODEL 4/ U.S.N. 21-29" and "BRANDIS & SONS, INC/ BROOKLYN N.Y./ 206 C - 90"; with 2 extra filters, extra telescope (unmarked) and key; in wood box 1988.107.34ab.

1988.107.33