FOR SALE IS ONE (1) VINTAGE 1956 GENERAL ELECTRIC FLUORESCENT LIGHTING ESTIMATOR WITH STORAGE ENVELOPE. NOTE SIGNS OF USE AND MINOR STAINING, YELLOWING. THIS PULL OUT ESTIMATOR ALLOWED A CUSTOMER TO CALCULATE SIZE AND NUMBER OF FLUORESCENT LAMPS NEEDED. ALLOWS FOR CALCULATING ROOM SIZE, CEILING HEIGHT, NUMBER OF FIXTURES, SIZE OF LAMPS AND MORE, TO ARRIVE AT SPECIFICATIONS FOR A WELL LIT ROOM. COPYRIGHT 1956 ON BACK OF PULL OUT. THIS ITEM WORKS PERFECTLY, SHOWING SIGNIFICANT SIGNS OF AGE AND STORAGE AND YELLOWING. YOU WILL RECEIVE ONE (1) VINTAGE GENERAL ELECTRIC FLUORESCENT LIGHTING ESTIMATOR AND ENVELOPE, AS PICTURED, SHIPPED BY USPS..... BID AND BUY HERE IN IN ABSOLUTE CONFIDENCE SINCE I HAVE THOUSANDS OF POSITIVE FEEDBACK AND TEN+ YEARS EXPERIENCE. I SHIP WITHIN TWO DAYS OF RECEIPT OF PAYMENT, OFTEN THE NEXT DAY. $3.81 USPS GREEN SHIPPING USING RECYCLED PACKAGING MATERIALS AND ENVIRONMENTALLY FRIENDLY MATERIALS TO ANYWHERE USA. I DO NOT SHIP ANYWHERE ELSE. HAVE A GREAT DAY AND THANK YOU FOR STOPPING BY.......