United States government master specification for matting, rubber, for use around electrical apparatus or circuits not exceeding 3000 volts to ground.
Contributors: United States. Bureau of Standards.
Series: Circular of the Bureau of Standards -- no. 312; Federal Specifications Board specification -- no. 414
Publisher: Government Printing Office
Published: 1926
Place of publication: Washington
Language: eng
Subjects: Matting.; Rubber.
Other titles: Specification for rubber matting
Notes: "Issued November 4, 1926."

At head of title: Department of Commerce. Bureau of Standards.