Plate 5A Early Camera	5B Rotating Stand	5C Rotating Lamp	5C Telescope	5D Easel

(Source:http://www.google.co.in/search?hl=en&q=Electrical+Joining&bav=on.2,or.r_gc.r_pw.r_qf.&
biw=1332&bih=581&um=1&ie=UTF8&tbm=isch&source=og&sa=N&tab=wi&ei=eexRUKG7AsWIrA
eDzYH4Cg#um=1&hl=en&tbm=isch&sa=1&q=Ball+%26+Socket+in+product+design&oq=Ball+
%26+Socket+in+product+design&gs_l=img.12...93.17337.6.19612.34.29.0.0.0.0.0.0..0.0...0.0..
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581 ; Sept. 13, 2012)

Ball and Socket principle has inspired designers to create varieties of products that would have greater movement while remains stationery at one point. The oscillation of a part provides greater comfort. The early camera tripod (plate 5A) had difficulty in oscillation because of the rigid camera mounting on the stand. Photographer had to relocate or change position along with the stand. Later period the tripod design (plate 5B) changed drastically due to the ball and socket mechanism which gave freedom of panning the camera. Wall-mounted lamps (plate 5C) with ball and socket joint helps to adjust the light source according to the position of the sofa, chair or any seating place. Telescope (plate 5C) is mounted on the base with the help of ball and socket linkage (joints) which would allow it to oscillate in various degrees. Artists require the easel (plate 5D) mounted on a base that could be changed to other positions as well. Therefore, the application of ball and socket joints helps to provide flexibility and comfort for better output.