Order quantity calculator

Claim 1

A CALCULATING DEVICE FOR COMPUTING TOTAL QUANTITIES OF ITEMS REQUISITE TO SATISFY EXPECTED DEMAND ACCORDING TO PREDETERMINED MATHEMATICAL RELATIONSHIP OF TIME AND USAGE FACTORS INVOLVED IN REPLENISHING INVENTORY THEREOF UNDER A PREDETERMINED PERIODIC ORDER SYSTEM, COMPRISING AN ELONGATED ENVELOPE MEMBER HAVING A SUBSTANTIALLY OPAQUE PLANAR WALL, AN ELONGATED TABLE CARD MEMBER MOUNTED SUBSTANTIALLY COEXTENSIVELY BENEATH SAID WALL FOR SLIDING MOVEMENT RELATIVE THERETO, SAID WALL HAVING PLURAL SPACED ORDER PERIOD AREAS DEFINED THEREON AND WITHIN EACH SAID AREA AN ELONGATED INDICIA AREA EXTENDING SUBSTANTIALLY ACROSS THE WIDTH OF SAID WALL AND AT WHICH SELECTED TRANSVERSELY EXTENDING PORTIONS OF SAID TABLE CARD MEMBER ARE VISIBLY EXPOSED, SAID WALL ALSO INCLUDING AN ADDITIONAL INDICIA AREA ALIGNED SUBSTANTIALLY TRANSVERSELY OF SAID ELONGATED INDICIA AREAS AND AT WHICH AN ADDITIONAL SELECTED LENGTHWISE EXTENDING PORTION OF SAID TABLE CARD IS VISIBLY EXPOSED; SPACED INDEX INDICATOR MEANS DISPOSED ADJACENT SAID ADDITIONAL INDICIA AREA WITH EACH SUCH INDICATOR MEANS BEING ALIGNED OPPOSITE ONE OF SAID ELONGATED INDICIA AREAS, LINEAR LEAD TIME SCALE MEANS EXTENDING IN COOPERATING ADJACENCY ALONG EACH OF SAID ELONGATED INDICIA AREAS AND EACH SUCH SCALE MEANS COMPRISING PLURAL SPACED INDEX MEANS DESIGNATING SELECTED LEAD TIME PERIODS RELATED TO AN ASSOCIATED ORDER PERIOD DESIGNATED BY A RELATED SAID ORDER PERIOD AREA; SAID TABLE CARD MEMBER HAVING PLURAL PARALLEL SPACED SCALE MEANS DESIGNATED THEREON AND ORIENTED SUBSTANTIALLY TRANSVERSELY OF SAID LEAD TIME SCALE MEANS WITH ONE OF SAID SCALE MEANS ON SAID TABLE CARD MEMBER COMPRISING PLURAL INDICIA LOCATED ALONG SAID LENGTHWISE EXTENDING PORTION OF SAID CARD MEMBER AND DESIGNATING USAGE QUANTITIES, THE REMAINING SAID SCALE MEANS OF SAID TABLE CARD MEMBER COMPRISING A SERIES OF PLURAL COMPUTED INDICIA DESIGNATING TOTAL QUANTITIES REQUIRED TO MEET EXPECTED USAGE FOR PREDETERMINED COVERAGE TIME INTERVALS CONSISTING OF THE SUM OF SELECTED ORDER PERIODS AND LEAD TIME PERIODS; PORTIONS OF ALL OF SAID REMAINING SCALE MEANS BEING VISIBLY EXPOSED AT EACH OF SAID ELONGATED INDICIA AREAS WITH EACH OF THE SAID INDEX MEANS OF EACH LEAD TIME SCALE MEANS BEING RELATED ONLY TO PREDETERMINED SCALES OF SAID SCALE MEANS WHEREBY MOVEMENT OF SAID TABLE CARD MEMBER RELATIVE TO SAID WALL TO DISPOSE A SELECTED INDICIA OF SAID USAGE QUANTITY SCALE MEANS OPPOSITE ONE OF SAID SELECTED SCALE INDICATOR MEANS SERVES TO ALIGN AND VISUALLY PRESENT A COMPUTED TOTAL QUANTITY INDICIA REPRESENTING THE NUMBER OF ITEMS REQUISITE TO MEET EXPECTED USAGE FOR A SELECTED ORDER PERIOD OPPOSITE EACH INDEX MEANS OF THE LEAD TIME SCALE MEANS ASSOCIATED WITH THE SAID ELONGATED INDICIA AREA ALIGNED OPPOSITE THE SAID SELECTED ONE INDEX INDICATOR MEANS, WITH SAID TOTAL QUANTITY INDICIA REQUIRED TO MEET A SELECTED COVERAGE PERIOD BEING PRESENTED OPPOSITE A SELECTED ONE OF SAID LEAD TIME SCALE INDEX MEANS FOR SAID SELECTED ORDER PERIOD.