发明申请
- 专利标题： TRANSPARENT OVERLAY FOR THE VISUAL ASSESSMENT OF MARKSMANSHIP
- 专利标题（中）： 透视视觉评估标记
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申请号： US12134949申请日： 2008-06-06
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公开(公告)号： US20090300927A1公开(公告)日： 2009-12-10
- 发明人: Miguel Arnoldo Rodriguez , Stephen Michael Waite
- 申请人： Miguel Arnoldo Rodriguez , Stephen Michael Waite
- 主分类号： G01B5/00
- IPC分类号： G01B5/00
摘要：
One embodiment of the measuring device (5) wherein the measurement pattern is printed on the inside or outside of a transparent medium. Its uses can include being held up between the target and the user, placed directly onto the target or projected onto the target by a light source.
公开/授权文献
- US2626652A Walking aid 公开/授权日：1953-01-27