Patent ID: 7430931

Claim:
Apparatus for measuring microgranulometry comprising: a) a micro tube ( 1 ), adapted to receive a sample in which the length is many times greater than the width and the cross-section is rectangular or circular; b) rolling holders ( 8 ) having rolling pivots ( 8 . 1 ) biased towards the micro tube ( 1 ) with spring ( 8 . 2 ); c) a gamma source ( 10 ), and a sonic source ( 11 ); d) a gamma receiver ( 12 ), and a sonic receiver ( 13 ); and e) a vertical screw ( 14 ) and rotating nut ( 15 ) for controlling the position of the micro tube ( 1 ), and thus the sample, relative to the gamma receiver ( 12 ), sonic receiver ( 13 ), gamma source ( 10 ), or sonic source ( 11 ).