supply of t.no.51255213 - sealing ring gasket between body and cover of coupling socket assembly 500amps, 750v, 3 phaset.no.51255213 - sealing ring gasket between body and cover of coupling socket assembly 500amps, 750v, 3 phase,auto ranging esr low ohm circuit capacitor meter tester. measuring range from 0.001 to 100 ohms. to measure the esr value, 1) accuracy: up to 1% 2) high resolution: 4 digit, or 0.001 ohm @ 1 ohm range as per specification attached in annexure. note: item to be supplied along with warranty certificate a nd calibration certificate. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]