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.
Games usually have a goal that a player aims to achieve. Early board games represented a battle between two armies, and most modern board games are still based on defeating opponents in terms of counters, winning position, or accrual of points. There are many varieties of board games.