发明名称 Access area measurement apparatus
摘要 An access area measurement apparatus includes a first elongated arm member of a defined length. A second arm member is fixed to and extends at a right angle from one end of the first arm member, and is shorter than the first arm member. The first arm member has a level to indicate that relative slope of a surface when the apparatus is placed on such a surface. The apparatus first arm member also includes a plurality of indicia for measuring compliance with ANSI and ADA accessibility standards.
申请公布号 US5212890(A) 申请公布日期 1993.05.25
申请号 US19910781493 申请日期 1991.10.22
申请人 WHITE, GLEN W.;MATHEWS, R. MARK 发明人 WHITE, GLEN W.;MATHEWS, R. MARK
分类号 E04F11/00;E04F21/00;G01C9/28 主分类号 E04F11/00
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