Abstract: A control method according to an aspect of the invention includes a process for setting target fastening torque, a pulse interval of neighboring pulses, and an elevated value of torque per pulse, detecting last fastening torque at an Nth pulse (N is a natural number of 1 or more) after seating of a fastening member, setting pulse loading time at an N+1th pulse and pulse strength at the N+1th pulse based on the last fastening torque at the Nth pulse so that fastening torque at the N+1th pulse coincides with a multiple of the elevated value, controlling a fastening tool based on the pulse interval, the pulse loading time, and the pulse strength so that last fastening torque at an N+Mth pulse (M is a natural number of 1 or more) reaches target fastening torque.

Abstract: A control method according to an aspect of the invention includes a process for setting target fastening torque, a pulse interval of neighboring pulses, and an elevated value of torque per pulse, detecting last fastening torque at an Nth pulse (N is a natural number of 1 or more) after seating of a fastening member, setting pulse loading time at an N+1th pulse and pulse strength at the N+1th pulse based on the last fastening torque at the Nth pulse so that fastening torque at the N+1th pulse coincides with a multiple of the elevated value, controlling a fastening tool based on the pulse interval, the pulse loading time, and the pulse strength so that last fastening torque at an N+Mth pulse (M is a natural number of 1 or more) reaches target fastening torque.

Abstract: Colors of sections of several beef carcasses are measured and the colors are classified into a predetermined number of grades of tone. Colored silicon plastic sol is poured in a glass cell for each grade, and the color of each plastic sol is matched with the classified beef color. The plastic sol is poured into a female mold having an irregular surface resembling a surface of a section of a beef, and the plastic is taken out from the female mold when it becomes gel.

Abstract: Resin pieces having a fat color corresponding to fat meats are molded and placed in a female mold. Resin having a lean meat color is pured in the female mold, and solidified resin is taken out from the mold.