System test 18: single stroke bells and coded pull! Simplex 55 ton spr. ret. single acting 13' stroke cyl. r5513 Bell stroke simplex fire single alarm
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Jan ford's world: single-stroke bellsSimplex str 4027-44 4" red single stroke bell part 624-238 240v ac nos Vintage simplex 10& single stroke fire alarm bell / gong $48.00Simplex str 4027 6" red single stroke bell part 624-245 240v ac nos w.
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