Meets ASTM C-151, C-157, C-227, C-311, C-341, C-452, C-490, C-596 and AASHTO M-210, T-107, T-160 specifications.
Measures length changes of hardened cement paste, mortar, and concrete prismatic specimens. Comparator for 10" effective length samples has a 3 5/8" dia. dial gauge with a range of .400" and graduations of .0001". The dial is marked 0-10. Unit accommodates tests specimens up to 4" x 4" cross section. Includes invar reference bar.