BS 1881-206
It is used for finding out the linear deformation caused on two reference points fixed on a loading member.
Specification:
This portable gauge is designed for a gauge length of 200 mm. of the reference pins. The deformation is indicated by a 0.002 x 5mm dial gauge attached to the instrument. Complete with two standard bars for 200 mm gauge length supplied in a wooden case. Accessories:
Reference pins in packet of 100 nos. at an extra cost.
This is for determining the lateral extension of 150 mm dia x 300 mm high cement concrete cylinders while testing them under compression.
Specification
The unit consists of two movable frames pivoted at one end. The extensometer is fixed to the specimen with the help of tightening screws. The lateral extension is indicated on a dial gauge of 0.002 mm x 5 mm is mounted on the upper ring and the tip of the dial gauge rests on an anvil. The zero on the dial gauge can be set by adjusting the anvil screw. Supplied in a wooden carrying case.
ASTM C 469 It is designed for finding out the deformation and strains on 150 mm. Diameter and 300 mm high cement and concrete cylinders when subjected to compressive loads. Specification:
Consists of a frame with a bottom ring and a top ring with tightening screws to firmly clamp the compressometer over the cylinder. A dial gauge .002 mm x 5 mm is mounted on the upper ring and the tie of the dial gauge rests on an anvil. The zero on the dial gauge can be set by adjusting the anvil screw. Supplied in a wooden carrying case.