JMT - 529
This is for determining the lateral extension of 15cms dia x 30 cm high cement concrete cylinders while testing them under compression.
The unit consists of two movable frames pivoted at one end. The extensometer is fixed to specimen with the help of tightening screws. The lateral extension is indicated on a dial gauge of .002mm x into 12mm travel. The extension is magnified 2.5 times and the dial gauge reading are to be divided by 2.5 to get the exact reading.
A spacer strip is provided to initially set the dial gauge, and can be removed after initial setting. Supplied in a wooden carrying case .