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Sector type shutter

Sector type shutter

1879
Pair of field glasses (binoculars)

Pair of field glasses (binoculars)

1850-1910
Oscillobar assemby for experimental prototype oscillogyro. Part of drum sub-assembly for oscillogyro. Contains beryllium oscillobar, perforated ceramic beam plates, hinge and two resistors. Made by Ferranti International, Bracknell, 1964-1969.

Oscillobar assemby for experimental prototype oscillogyro

1964-1969