Illinois Society of Architects · Chicago · leaf 560
Graduated, Quick-Open-ing, Packless. Bakelite in-sulated handle, never getshot. Half turn from tullopen to closed. Dial showsposition of valve. … ILLINOIS HEATING SYSTEMS
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
