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.
Two of our favorite classic board games are checkers and chess. Some of our friends WONDERed which of these classics came along first, so we decided to investigate! Luckily, our time machine was full of fuel, so we set the dial back about 1,500 years and headed to ancient India.