Abstract: A capacitive pressure transducer including a pair of electrically insulative elastic diaphragms disposed adjacent each other and bonded together in a spaced apart relationship to form a sealed cavity, a conductive layer applied to the inside surface of each of the diaphragms and a small absolute pressure provided in the cavity. This small absolute pressure cavity essentially reduces the effects of the negative temperature coefficient of the modulus of elasticity of the diaphragms.

Abstract: A holder for desk-top display of pages of typing books, ring-top shorthand books, and the like, consists of two sturdy wire support elements of identical inverted-V shaping held in laterally-spaced relationship by two additional wire elements joined with legs of the support elements near their lower ends, one of the additional wire elements being of rigid form to receive the bottom edge of a notebook and the other being formed as an elongated spring clip component which cooperates with proximate legs of the support elements to receive and grasp turned-over portions of a supported book, the said lower ends of the support element legs being tipped with relatively soft caps.