May 14, 2012
Slightly obscure question. What are these tiny devices called? They were created more as an amusement than a scientific instrument. The bottom part of (2) is a good clue.
Cracked by: Bipin Banavalikar , Manish Achuth , raklodramA , rickde , KK , Sumanth Patlolla , badideabear , Bharath , Rogi and Amarendra Kumar
Stanhopes, introduced to the world as ‘microscopic photo jewelry’. These tiny lenses could be attached to microphotos to view them without the need of a microscope.