Abstract: The cassette has a bottom on which holding means are provided for holding optical fiber connections thereon, and optionally on which a cylinder is provided for coiling the fibers. The bottom includes different sets of openings. Either two connection supports chosen from different supports, or else one of said different connection supports and said cylinder are removably mounted side-by-side in two of said sets of openings, the supports and the cylinder having respective sets of snap-fastening catches corresponding to respective sets of openings. The cassette is thus made adaptable to being used in different ways.

Abstract: Means for air conditioning a building interior so as to afford optimum comfort to all its occupants in terms of their physical characteristics. An automatic control mechanism monitors devices for measuring humidity, air velocity, bulb temperature, and the weight and body temperature of humans or animals occupying the said interior. The mechanism comprises a calculator assembly comprising a computer and a comparator. Control is effected by comparing in the comparator the ideal temperature calculated by the computer with the actual measured temperature. The transmitted error signal imposes the control either on a heater or on a ventilator 1 in response to a command signal from a thermostat.