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For sale is a Grant Worm Reduction Unit Size 133 Style STFNameplate Data (please verify independently):
GRANT WORM REDUCTION UNIT SIZE 135 STYLE STF RATIO 20 NO. A KEEP UNIT FILLED TO LEVEL WITH MOBIL EXTRA HECLA SUPER CYLINDER OIL (A MOBIL PRODUCT OR EQUIVALENT) WITH CONTINUOUS USE OF UNIT CHANGE OIL EVERY TWO MONTHS GRANT GEAR WORKS, INC. NORWOOD, MASS. NP-3 R-5