164 



Tally Counter. A pocket instrument used in tallying cargo, etc, 



[5, 13, 15, 17, 28.] 

 Tally Register. An instrument for counting vehicles, people, 



cattle, etc. [5, 13, 15, 17, 21, 26.] 

 Tangent Galvanometer. See Galvanometer. [19, 20, 24.] 

 Tape Measures. In use by surveyors for measuring. [-5, 9, 13, 



15, 16, 17, 21, 25, 26, 27, 28.] 

 Taseometer. An instrument for measuring the strains to which 



the different parts of any structure may be submitted. 

 Tasimeter. An instrument for measuring very minute variations 



of pressure, temperature, moisture, etc. [13.] 

 Tautness-Meter, 'Gorman. An instrument for measuring the 



stresses or tensions of cables, stays and wire ropes in aircraft. 



[4, 6, 21.] 

 Taximeter. An instrument for measuring the distance travelled 



by a vehicle. [13, 15.] 

 Tee-Square. A drawing instrument used for making horizontal 



and (with the aid of a set-square) vertical lines. \2, 5, 6, 



13, 15, 17, 20, 21. 24, 26, 27, 28.] 

 Teinoscope. An optical instrument, consisting of prisms so 



combined that the chromatic aberration of the light is 



corrected, and the linear dimensions of objects seen through 



them are increased or diminished. [13.] 

 Telautograph. An electrical device for transmitting autographs 



or copying designs. 

 Telectograph. An apparatus for reproducing by telegraph the 



images obtained in the camera obscura. 

 Telegraph. An apparatus for communicating intelligence rapidly 



between different points, electrically, by a code of signals. 



[13.] 

 Telegraph, Engine. A mechanical arrangement on ships for the 



transmission of ordeis from the bridge to the engine-room. 

 Telegraph, Needle. A telegraph in which the indications are 



given by the deflections of a magnetic needle. 

 Teleiconograph. A combination of the telescope and camera 



lucida (q.v.). 

 Telemeter. An instrument for determining the distance of an 



object from the observer. [2, 3, 13, 20, 21, 26, 27, 28.] 

 Telemeter, Military. A pocket range-finder (q.v.). 

 Telemicrophone. A combined apparatus simultaneously pro- 

 ducing the effects of the microphone and the telephone, and 



reversible like the latter. 

 Telengiscope. An instrument combining the powers of the 



telescope and microscope. [13.] 

 Telephone. An instrument for transmitting sounds, especially 



articulate speech, at a distance. [16] 

 Telephote. An instrument for conveying messages or images by 



the transmission of light. 

 Telephoto-Lens. See Lens. 



