| http://www.w3.org/ns/prov#value | - Features and advantages of the invention will appear also from the following description of embodiments thereof, given by way of example, in conjunction with the accompanying drawings, in which: FIGURE 1 is a simplified diagram showing the general arrangement of a position-response apparatus; FIGURES 2, 3 and 4 are diagrammatic perspective views of three forms of linear capacitative potentiometers
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