Abstract: A tablet measuring apparatus has a stainless steel housing, which contains a measuring section having a conveyance disk and an optical sensor, a tablet feeding section for feeding a tablet to the measuring section, and a recovery section for returning the tablet having undergone a measurement process to a tablet coating apparatus. The optical sensor can be adjusted in its height position by a height adjusting mechanism so that the optical sensor and the tablet can be separated from each other at a predetermined distance. The tablet is sucked to and conveyed by the conveyance disk and, during the conveyance, physical properties of the tablet are measured in a non-contact manner by the optical sensor. Out-of-spec tablets are discharged from a defective product discharging section, while in-spec tablets are fed back to the tablet coating apparatus through the recovery section.