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Length Comparator

Length Comparator

Product Details:

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Length Comparator Price And Quantity

  • 1 Unit

Product Description

Length Comparator MTCT-14

The relatively small difference in central length between a reference gauge black of known central length and another gauge of unknown central length is measured by a high resolution length indicator the scope of this test is the determination of the effect of aggregates on the drying shrinkage of cement. The instrument consists of an analogue or digital dial gauge which is mounted on a steel frame. The top anvil is adjustable to suit the required specimen. A two gang shrinkage mould, 25x25x285 mm size (250mm gauge length), is made of steel. The mould and steel inserts should be ordered separately. Also available is a reference rod, 300mm long with convex hemispherical ends. The comparator is available in two models one with 0.01 mm x 10mm analogue dial gauge or with 0.001mm x 20 mm digital dial gauge.

Technical Specification
  • Effect of aggregates in drying shrinkage of concrete
  • Thermal expansion
  • Hydraulic shrinkage of cement mortar
  • Shrinkage determination of grouts for tiles
  • Expansion of Portland cement
  • Length change of hardened cement paste
  • Restrained expansion f mortar
  • Potential reactivity of aggregates
  • The instrument consists of a channeled base over which two vertical pillars are fixed
  • An adjustable cross plate is at the top
  • A dial gauge, reading to .002 mm x 12 mm. can be fixed to the top cross plate
  • The plunger end of the dial gauge can be located upon a 6.5 mm diameter ball or other reference point cemented in the specimen
  • On the base there is a similar recessed seating in which can be placed a second ball or reference point in the specimen
  • Complete with a stainless steel standard bar with insulated grip and with 6.5 mm diameter balls mounted in the ends
  • The unit can be supplied with a .0001 inch x 1/2 inch dial gauge at extra cost if indicated at the time of placing the order
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