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GENERAL DESCRIPTION
The measuring part of
the instrument is a spiral-spring. (max. torque transmitted 30 kgcm). When the
handle is turned, the spring deforms and the upper part and the displacement
depends on the torque required to turn the vane. By means of a graduated
scale shear strength of the clay is obtained. The lower and upper halves of
the instrument are connected by means of threads. The scale is also supplied
with threads, and follows the upper part of the instrument by means of two
lugs. The O-point is indicated by a line on the upper part. When torque is
applied, the scale-ring follows the upper part of the instrument, and when
failure in the clayis obtained, the scale-ring will remain in its position
due to the friction in the threads.
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Vane dimensions (height x
dia.)
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32x16Íž 40x20, 50.8x25.4,
101.6X50.8 mm
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