The aviation pocket-book for 1918; a compendium of modern practice and a collection of useful notes, formulae, rules, tables and data relating to aeronautics (1918)
Matthews, Richard Borlase, 1878- · London : C. Lockwood and son · leaf 330
a paper on Problems Relating toAir-craft. This is made by the Cambridge fScientific InstrumentCompany, and permits of measuring the tension of am tiewirewithout cutting it. Its use has eliminated many an accident. The principle of the appliance is that if a wire be stretchedbetween two fixed… … The two rollers and the clamps are not a straight line, thereforethe stifi spring to which they are attached is deflected, and theamount of this deflection is measured on a direct reading dial 190 AEROPLANE ALIGNMENT [dtv. VII graduated in lbs. A helical spring is substituted for the flat…
Aeronautics
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