Chicago : Engineering and Contracting Pub. Co. · leaf 643
being made for the change of temperaturethat had occurred. It was found that themarker could be reset within 1/16 in. of theoriginal position. After this preliminary workwas finished, the tape was taken downjstretched from pier to pier and supported onthe piers under exactly the same tension…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
