Periscope Sextant Mk 2A Calibrated by Fenns of Farnborough
Later DC6 era pressurised planes could not use the perspex astrodome bubble fitted in the roof as in the DC4 / Catalina era planes, as the pressurisation would not allow the bubble window.
Instead they had a special window frame built into the roof near the rear of the flight deck through which a periscope sextant was used.
Straight out of Ministry use , comes in Aluminium black case with carrying handle.
Case 17.5 in height 12.5 in widest point
Periscope 16.5 in 42 cm length
7kg weight in case.
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