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▪ I. telemeter, n.|tɪ-, tɛˈlɛmɪtə(r), ˈtɛlɪˌmiːtə(r)|
Also telometer.
[f. tele-, telo-2 + -meter. Cf. F. télémètre, 1852 in Cosmos II. 222.]
1. An instrument for ascertaining the distances of objects: applied to instruments of various kinds used in surveying, and in military operations.
acoustic telemeter, one in which the distance is ascertained by observing the time occupied by sound in traversing it.
1860G. Richardson Patent Specif. No. 2102 This improved instrument (which in commerce I intend to call a telometer). 1869Pall Mall G. 31 Aug. 4 Of two batteries coming into action, the one with and the other without a telemeter, a difference of about a minute in opening fire would make the difference between accurate shooting and shooting by guesswork. 1888A. W. White in Encycl. Brit. XXIII. 126/1 Telemeter, or Rangefinder... Telemeters have been made on three distinct principles, and classified as acoustic, optical, and trigonometrical respectively. Ibid. 126/2 The Nolan range finder..was the first telemeter used by the British artillery. 1900H. M. Wilson Topogr. Surv. xiii. 274 The gradienter is used as a telemeter in measuring horizontal distances in two ways.
attrib.1900H. M. Wilson Topogr. Surv. 236 The stadia, telemeter, or subtend system [of measuring distances].
2. An apparatus for recording the readings of any physical instrument at a distance by means of an electric current; a general term including the teleanemograph, telebarometer, telethermometer, etc. (see tele-). In mod. use, an instrument for measuring a quantity at a distance from the place where the result is displayed or recorded.
1891in Cent. Dict. 1929Jrnl. Amer. Inst. Electr. Engineers XLVIII. 183/1 In addition to surveying the field of application of ‘telemetering’..the paper presents several innovations in the types of ‘telemeters’ available. 1941T. J. Rhodes Industr. Instruments for Measurem. & Control viii. 363 One advantage of this telemeter is that the measuring device requires very little power to move the condenser plate. 1947Sun (Baltimore) 10 Nov. 9/2 Electronic gadgets called ‘telemeters’..are installed in high-speed missiles and tuned to send back to the ground by radio whatever information the scientists need. 1975D. G. Fink Electronics Engineers' Handbk. xxvi. 43 The passive implant telemeter may contain a resonant circuit in which the resonant frequency, made to vary with the body signal, can be detected with a grid dip meter.
3. (Usu. with capital initial.) A proprietary term for a system of pay-TV involving the use of a coin-box attached to the television set. U.S.
1953Wall St. Jrnl. 27 Nov. 18/4 Another pay-as-you-look television set-up makes its debut here... It [sc. the International Telemeter Corp.] has installed ‘Telemeters’ in 78 local homes. 1955Amer. Speech XXX. 232 For Telemeter, the subscriber pays for each program by dropping coins into a box which is attached to the receiver. 1961Spectator 24 Mar. 394/3, 5800 telemeter sets were installed [in Canada]. 1961Official Gaz. (U.S. Patent Office) 17 Oct tm87/1 Telemeter. For pay-television systems including a television transmitter.., equipment at a receiver for processing subscription-television signals, and computer equipment for processing records made at each subscription-television subscriber receiver. First use during June 1951.
Hence telemetric |tɛlɪˈmɛtrɪk|, teleˈmetrical adjs., pertaining to, connected with, or serving as a telemeter; teleˈmetrically adv., by means of telemetry; also teleˈmetrograph, an instrument for measuring and drawing plans of distant objects or areas (Sci. Amer. Supp., 1 Aug. 1885, 7975).
1877Knight Dict. Mech. 2513 Another form of telemetric marine-glass... The telemetrical telescope of Captain Gautier. 1900H. M. Wilson Topogr. Surv. xiii. 282 The range-finder furnishes a..rough telemetric method of obtaining a fairly accurate measure of inaccessible distances. 1957Times 11 Nov. 10/5 The radio transmitters..and the telemetric apparatus on board have..ceased work. 1961Webster, Telemetrically. 1970Sci. Jrnl. Aug. 7/1 A cosmonaut in the command module working the Vulcan welding equipment telemetrically by cable. 1971Nature 2 July 65/2 The use of telemetric recording of physiological information from free swimming fish in their natural environment. 1974W. Garner Big Enough Wreath viii. 98 It's definitely a satellite. Multitone telemetric signals. 1977Offshore Engineer May 75/2 Telemetrically operated valves are controlled by two systems in the experiment.
▪ II. telemeter, v.|ˈtɛlɪmiːtə(r), tɪˈlɛmɪtə(r)|
[f. the n.]
trans. To measure (a quantity) and transmit the result to a distant point; to transmit (a measurement or observation). Freq. with back.
1929Jrnl. Amer. Inst. Electr. Engineers XLVIII. 185/2 A carrier wave of constant frequency modulated by an audio frequency which varies with the magnitude of the quantity being telemetered. 1941T. J. Rhodes Industr. Instruments for Measurem. & Control viii. 356 The pressure or liquid-level indication is telemetered to the operating floor. 1953A. C. Clarke Prelude to Space xii. 64 ‘Alpha's’ main instrument readings are telemetered back to Earth. 1965W. L. Donn Meteorology i. 4 The radiosonde..telemeters the most complete information on the vertical distribution of temperature, pressure and humidity to radio receivers in the laboratory. 1969Times 2 May 16/4 Spacecraft designed to telemeter photographs of the moon's surface back to the earth. 1971G. G. Luce Body Time v. 155 His heart rate was telemetered by a small radio capsule in his undershirt.
Hence ˈtelemetered ppl. a., ˈtelemetering vbl. n. and ppl. a.
1929[see telemeter n. 2]. 1929Jrnl. Amer. Inst. Electr. Engineers XLVIII. 183/1 In the design of a telemetering equipment it is necessary to study the channel limitations. 1953Proc. Inst. Electr. Engineers C. i. 44/2 The rate of change of a telemetered value can be obtained by means of a feedback amplifier. 1955Sci. News Let. 21 May 324/3 Other methods currently used to track missiles are telemetering, in which the missile radios instrument readings to the ground, and radar. 1960Brit. Communications & Electronics VII. 598/1 Telemetering from the digestive tract. 1976Offshore Platforms & Pipelining 211/1 The operator has a complete telemetering system plus sonar and television. 1978Broadcast 5 June 21/2 All the telemetered information is available on..wall mounted key and lamp panels. |