| http://www.w3.org/ns/prov#value | - a laser unit including a laser light source and a means of controlling and aiming it; an analog signal processing unit receiving signals from the laser unit; an A/D converter receiving, from the analog processing unit, signals related to the distance of the points being spotted by the laser; a decoder unit receiving, from the analog processing unit, signals related to the optical code; and a proce
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