Abstract: A gyro sensor is secured to a machine tool. When the machine tool is displaced, the gyro sensor detects rotation of the machine tool. The machine tool has a rotation detecting unit. Based on rotation data obtained by the gyro sensor, the rotation detecting unit determines whether the machine tool has been displaced. If the maximal rotation angle of the machine tool exceeds a predetermined value, the rotation detecting unit determines that the machine tool has been displaced. The rotation detecting unit has history data of the rotation angle recorded in a period from the time at which detection of the rotation angle of the machine tool is started to the time at which such detection is ended. The rotation detecting unit determines whether the machine tool has been displaced using the history data.

Abstract: A manufacturing method for a photo-sensitive film magazine packed in a container is disclosed. The method comprises the steps of (a) assembling a photosensitive film magazine in a photosensitive film magazine assembly section (b) feeding successively the photosensitive film magazine to a container accommodation section from said photosensitive film magazine assembly section through a predetermined passage and (c) setting the photosensitive film magazine into a photosensitive film magazine container in the container accommodation section.

Abstract: In the transmission of measurement data from a rotating body to a stationary receiver, a rotary signal transmitter mounted on a rotating shaft employs a printed circuit. A printed circuit board assembly for the rotary transmitter has a plurality of evenly circumferentially distributed printed circuit boards which have their electronic components facing radially inwardly so as to resist damage due to centrifugal force resulting when the shaft and boards rotate. Connecting wires connect the assembly to a temperature sensor and the signal corresponding to the temperature is transmitted via a light-emitting element to a light-sensitive element of the receiver. Another arrangement employs rotationally balanced printed circuit discs extending radially. Multiplexing means may also be provided.