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Expired
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Arthur Bowmar-Porter
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Individual
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Individual
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Holders For Apparel And Elements Relating To Apparel
(AREA)
Abstract
12,966. Porter, A. Bowmar-. June 4. Mathematical drawing-appliances. -A device for enabling students to determine the dimensions of an object as seen in perspective consists of a rectangular frame A having graduated edges adapted to receive two graduated bars C, D which may be moved to bound an aperture through which the object is visible. The bars may be moved by the fingers or by screws, and may be fixed in their adjusted positions by screws.
GB190712966D1907-06-041907-06-04A Device or Appliance for use in Sketching or Drawing and Chiefly Intended for Teaching Purposes
ExpiredGB190712966A
(en)
A study of the requirements for teacher competency in audio-visual education with suggested content for pre-service and in-service teacher education programs