HET 02070 - LENGTH COMPARATOR - IS 1199-1959, IS 4031 1968
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LENGTH COMPARATOR
The apparatus can be used for three basic tests :
Initial drying shrinkage – The difference between the length of the cured specimen and the length when it is dried. - Drying shrinkage - The difference between the length of the specimen from existing structure and its length when completely dried.
- Moisture movement - The difference between the length of the dried specimen and its length when again saturated with water.
The apparatus consists of a frame with adjustable cross plate and a recessed seating and a 300 ± 1.0 mm long alloy steel reference bar having coefficient of thermal expansion less than 2x10-6deg with 6 mm dia steel balls mounted at the ends. Supplied complete, with a dial gauge 0.002 mm x 10 mm.