1. METHOD OF FABRICATING A REED SWITCH FROM PARTS INCLUDING AN OPEN ENDED GLASS ENVELOPE AND TWO REEDS, COMPRISING: (A) SUPPORTING SAID REEDS IN SPACED APART, OVERLAPPED RELATION WITHIN SAID ENVELOPE, (B) ADJUSTING THE GAP BETWEEN SAID REEDS TO PROVIDE A DESIRED SPACING THEREBETWEEN SAID GAP ADJUSTING COMPRISING: (1) MOVING ONE OF SAID REEDS INTO ELECTRICAL CONTACT WITH THE OTHER OF SAID REEDS, (2) COMPLETING AN ELECTRICAL CIRCUIT THROUGH SAID REEDS, (3) MOVING SAID REEDS APART UNTIL THE CIRCUIT IS BROKEN TO POSITION SAID REEDS APART AT A REFERENCE POSITION, AND (4) MOVING SAID REEDS A SELECTED DISTANCE RELATIVE TO EACH OTHER FROM SAID REFERENCE POSITION, (C) SEALING ONE OF SAID REEDS THROUGH ONE END OF SAID ENVELOPE, (D) THEN SEALING THE OTHER OF SAID REEDS THROUGH SAID ENVELOPE, AND THEN (E) READJUSTING THE SAID GAP BETWEEN SAID MEMBERS DURING THE LAST-NAMED SEALING STEP.