Abstract: An outer and inner diameter measuring method for a transparent tube in a non-contact manner includes the steps of irradiating a light having a linear sectional shape, inclined at a pre-determined angle with respect to a plane perpendicular to a length direction of a transparent tube, to the transparent tube; obtaining a light beam pattern formed since the light having a linear sectional shape is intercepted and refracted by the tube; obtaining an inner diameter of the tube by extracting inner diameter information of the tube from the obtained light beam pattern; and obtaining an outer diameter from a light beam pattern refracted by the tube, thereby calculating the outer and inner diameters together.

Abstract: The present invention relates to a support device for a monitor for use in an ultrasonic diagnostic apparatus, which enables a user to displace a monitor easily and diversely according to his or her posture, thereby providing convenience in use. The support device comprises: a base frame rotatably mounted to the main body; a pair of arms hingedly jointed to the base frame at respective one ends thereof; a connecting member for interlocking the pair of arms, the connecting member being hingedly coupled to the other ends of the pair of arms; brackets for supporting the monitor, the brackets being rotatably connected to the connecting member; and means for maintaining the monitor stationary at a certain position by providing the arms and the brackets with a force for restraining the arms and the brackets from being rotated with respect to the base frame and the connecting member against a moment due to a weight of the monitor.