Abstract: An apparatus controls the temperature of a multi-zone furnace based on a given temperature distribution pattern, which pattern is automatically switched zone by zone while considering inter-zone thermal interferences as the work being heat-treated is changed by using a memory storing a series of such patterns for different kinds of works.

Abstract: A computer supervising individual controllers has a memory and a programmer, the memory storing a set of operating modules and control information of individual controllers, the programmer making a control program for each controller by providing software wiring of the operating modules based on the control information therefor, whereby the individual controllers are started by the control program and control information from the computer, while during operation the controllers transmit the latest control information to the computer for updating the control information in the computer.

Abstract: An apparatus controls the temperature of a multi-zone furnace based on a given temperature distribution pattern, which pattern is automatically modified zone by zone as the work being heat-treated is changed by using a memory storing a series of such patterns for different kinds of works.

Abstract: The disclosed connectible instrument casing has holding grooves formed on an outer sidewall thereof and linear ridges snugly insertible in the holding grooves, whereby adjacent casings are connected by engaging the linear ridges with the holding grooves. Each casing preferably has opposing grooves located in the inner surface of its top and bottom walls for supporting and guiding a circuit board.