Rectilinearly adjustable variable

Claim 1

A MINIATURE VARIABLE RESISTOR COMPRISING: A SUBSTANTIALLY PLANAR BASE MEMBER; A PAIR OF SPACED APART UPSTANDING SIDE WALLS LONGITUDINALLY EXTENDING ALONG SAID BASE MEMBER AND SPACED INWARDLY FROM THE END AND SIDE EDGES THEREOF; A RESISTANCE ELEMENT DISPOSED BETWEEN SAID SIDE WALLS; A COLLECTOR BAR MOUNTED UPON THE TOP EDGE OF AT LEAST ONE OF SAID SIDE WALLS; A UNITARY BOX-LIKE STRUCTURE HAVING ONE OPEN SIDE AND CARRYING A LEAD SCREW THEREIN; A SLIDER BLOCK DISPOSED ABOUT AND SPACED FROM SAID LEAD SCREW; RESILIENTLY DEFORMABLE MEANS ENGAGING SAID SLIDER BLOCK AND SAID LEAD SCREW FOR MOVING SAID SLIDER BLOCK UPON ROTATION OF SAID LEAD SCREW; A CONTACT MEMBER CARRIED BY SAID SLIDER BLOCK; SAID OPEN SIDE OF SAID BOXLIKE STRUCTURE RECEIVING SAID SIDE WALLS ON SAID BASE MEMBER, THE EDGES OF SAID OPEN SIDE CONTACTING SAID BASE MEMBER WHEREBY A CLOSED HOUSING IS PROVIDED FOR SAID POTENTIOMETER, SAID CONTACT MEMBER MAKING SLIDING CONTACT WITH SAID RESISTANCE ELEMENT AND SAID COLLECTOR BAR; AND ELECTRICAL LEADS CONNECTED TO SAID RESISTANCE ELEMENT AND SAID COLLECTOR BAR AND EXTENDING EXTERNALLY OF SAID HOUSING.