Compressometer / Extensometer, 4 inch, with 2 dial indicators

Combined compressometer and extensometer contains a third yoke located halfway between the two compressometer yokes and attached to the specimen at two diametrically opposite points.

Middle yoke is hinged to permit rotation of the two segments of the yoke in the horizontal plane.

Indicator gives deformation readings. Second indicator is furnished for compressometer section. Unit measures changes in length and diameter.

Dial indicators have an operating range of 0.2 in. graduated in 0.0001 in. divisions.