The pressure is estimated by means of a mercury or an aneroid manometer. A stethoscope is normally used in conjunction with the instrument to listen to the blood pressure sounds (a stethoscope is not needed with an electronic sphygmomanometer).
ObjectID: 171. Description Edit | History. Chess is a two-player, abstract strategy board game that represents medieval warfare on an 8x8 board with alternating light and dark squares. Opposing pieces, traditionally designated White and Black, are initially lined up on either side.
Tips. 1  Checkers (using the U.S. rules) uses the same board as Chess. Many sets come with the pieces needed to play both games. 2  Many different games can be played using the basic 8x8 Checkers board and pieces. In fact, it's not too hard to come up with your own variants.