A C172 WINGTIP STRUCK A SEVEN AND ONE HALF FOOT TALL FUEL PUMP ADJACENT TO A TXWY AT A SMALL AIRFIELD.

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I WAS TAXIING A C172 AT ZZZ THROUGH THE PARKING AREA. WHILE MOVING THROUGH THE AREA; I STRUCK A SELF SERVE FUEL PUMP WITH THE OUTBOARD EDGE OF THE R WINGTIP WHICH RESULTED IN DAMAGE TO THE LEADING EDGE; WINGTIP; AND SELF SVC FUEL PUMP. AFTER STARTING MY ACFT; I BEGAN TO MANEUVER THROUGH THE PARKING AREA IN ORDER TO AVOID ANOTHER ACFT WHICH WAS PARKED TO THE E OF MY ACFT ON THE N SIDE OF THE PARKING AREA. WHILE TURNING TO THE E; I BEGAN TO MOVE SLIGHTLY TO THE SOUTHERN EDGE OF THE TAXI AREA IN ORDER TO ALLOW ADEQUATE CLRNC FROM MY ACFT'S L WINGTIP; AND THE SPINNING PROP OF THE OTHER ACFT. I BELIEVED I HAD SUFFICIENTLY MANEUVERED TO AVOID THE OTHER ACFT'S PROP AND LEFT ENOUGH ROOM TO CLR THE FUEL PUMP. HOWEVER; I DID NOT ADEQUATELY JUDGE THE DISTANCE AND HT OF THE PUMP. I STRUCK THE PUMP MOVING W TO E. THE IMPACT CAUSED THE ACFT TO PIVOT AROUND THE PUMP. THE ACFT STOPPED IN A SOUTHERLY FACING POS. I IMMEDIATELY SHUT DOWN THE ENG; AND DETERMINED IF WE NEEDED TO EVAC THE ACFT. SINCE THERE WERE NO SIGNS OF FUEL LEAKAGE; I INSTRUCTED MY PAX TO STAY IN THE ACFT. THE PLT OF THE OTHER ACFT HAD SECURED HER ACFT AND WAS ALREADY MOVING TOWARDS MY ACFT. WE BOTH ASCERTAINED THE DAMAGE OF THE ACFT. I DECIDED THAT I SHOULD CALL FLT MAINT TO APPRISE THEM OF THE SITUATION. IT WAS DETERMINED; THROUGH DISCUSSIONS WITH MAINT; THAT THEY SHOULD FLY OUT AND INSPECT THE ACFT. IT WAS DETERMINED THAT THE IMPACT WITH THE PUMP DENTED THE OUTBOARD EDGE OF THE WING; IN ADDITION TO CRACKING THE LEADING EDGE OF THE WINGTIP. THE DECISION WAS MADE; BY THE DIRECTOR OF FLT MAINT; TO RECEIVE A FERRY PERMIT TO FLY THE ACFT BACK TO ZZZ1. THE OPERATOR OF THE ARPT WAS CONTACTED REGARDING THE DAMAGE TO THEIR SELF SVC PUMP. THE PUMP HAD SUFFERED SOME DAMAGE; AS IT WAS NOW LEANING TOWARDS THE E (DIRECTION OF IMPACT). A COUNTY EMPLOYEE INSPECTED THE PUMP AND NO SIGNS OF FUEL LEAKAGE WERE SEEN FROM THE PUMP AT THAT TIME. THE SELF SVC FUEL PUMP WAS LOCATED AT THE EDGE OF THE TXWY. WITH THE CESSNA'S WINGSPAN IT WOULD BE IMPOSSIBLE TO TAXI DOWN THE CTR OF THE TXWY WITHOUT STRIKING THE FUEL PUMP. THE FUEL PUMP'S HT WAS MEASURED TO BE 7 1/2 FT TALL.