COMBINATION DRAWING/MEASURING PEN
This invention is a pen that combines drawing and measuring constituted of an elongated, hollow body portion with a cavity in the inside, an aperture at a front end and an on/off switch at a rear end. The pen has a roller ball tip in the cavity moving up and down by a button protruding outside the cavity such that the roller ball tip may extend through the aperture for drawing; a sensor probe in the cavity moving up and down by a second probe outside the cavity such that the sensor probe may extend through the aperture for measuring; a central processing unit (CPU) for calculating an output from the sensor probe; a LCD panel on the body portion for to display a measurement from the sensor probe; and at least one battery in the cavity for powering the CPU and the LCD panel.

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