'In 1676 Robert Hooke came up with a universal one of these to manipulate the mirrors of his helioscope'
a universal joint
BRITISH INVENTIONS: In 1676 Robert Hooke came up with a universal one of these to manipulate the mirrors of his helioscope
In 1676 Robert Hooke came up with a universal one of these to manipulate the mirrors of his helioscope
In 1676 Robert Hooke came up with a universal one of these to manipulate the mirrors of his helioscope
BRITISH INVENTIONS
a universal joint
BRITISH INVENTIONS