A thermometer and extensometer for cables and conductors is described. The motion-artifacted image is forward-projected by a forward-projector to create forward-projections which are compensated for image degrading factors, such as resolution recovery, scatter and attenuation, and are compared with the acquired projections by a comparing unit to generate a motion-correction. The clock shift is assigned such that SHDELAYSHfBOUND, where SH and SH are the clock shift of first and second auxiliary vertices, DELAY is a maximal delay of the path between the first and second auxiliary vertices, f is a minimize constant, and BOUND is a timing restriction of the first and second auxiliary vertices. Each of the several illuminating light beams generates a respective focus in the specimen, all the foci being arranged in one plane. The stylus pen switches working modes between the camera module and the electromagnetic touch pen module through powering on and off the power button. The controller may further be configured to initiate a device input associated with the given input gesture.