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WILLIAM S . SARIC D e p a r t m e n t o f M e c h a n i c a l and A e r o s p a c e E n g i n e e r i n g A r i z o n a S t a t e U n i v e r s i t y Tempe, A r i z o n a 8 5 2 8 7 -6 1 0 6 D e c e m b e r 1 9 , 1988

A volumcnometer of improved design has been developed for measuring the solid volumes of specimens varying in size up to that of standard refractory bricks. The chief feature of the new design is the use of a closed-cistern, altitude-type mercurial barometer to replace the simple manometer previously used. The barometer is designed for use in a constant-temperature room (21.1'C.) where the acceleration of gravity is 980.1 cm. per Under these conditions, pressure readings are automatically corrected to standard conditions. A vernier permits rapid readings to 0.1 mm. of mercury.