This is for the determination of lateral extension of 150mm dia x 300mm high cement concrete cylinders while testing them in compression.

The extensometer consists of two movable frames pivoted at one end. A dial gauge measures the lateral extension, and a removable spacer strip is for the initial setting of the dial gauge. Mounting extensometer on the specimen is with help of screws. Supplied complete, with a dial gauge 0.002mm x 10mm in a wooden case.