supply of cb time interval meter (digital)cb time interval meter (digital),cb time interval meter (digital).the instrument should be capable of measuring open, close & close-open timin gs of main contacts of all three poles simultaneously with end-to-end connections, display the timings of all three poles simultaneo usly on 4-line 20 character backlit lcd directly in milliseconds, range of timing measurement should be from 1ms to 999 ms in sev eral ranges, resolution of the timing should be 1ms as per the selected range, measurement accuracy of value +/-0.05% + 1 digit . the instrument should work on power supply of 230v ac+/-15% at 45-55hz and should have inbuilt rs 232c port for downloading data to a pc (with optional software).the instruments should be supplied with carrying case & calibration certificate issued by nab l/govt accredited agency only. detailed description enclosed. warranty period: 30 month(s) from the date of supply. [ warranty period: 30 months after the date of delivery ] ]