The 5265A is a plug-in for use in the 5245/6/8 series electronic counters, and with suitable adapters may also be used in the 5345A and 5360A counters as well. It permits the counter to be used as a manually ranged digital DC voltmeter, with a six digit readout. The polarity of the input signal is indicated by a pair of neon pilot lamps on the upper left edge of the plug in.

Specifications:
Range: 10.0000, 100.000 and 1000.00V with 5% overrange capability.
Accuracy: +/-0.1% of the reading (+/-0.01% of full scale for readings of less than 1/10 of full scale).
Input resistance: 10.2M Ohm DC on all ranges.
Response time: <450ms to to 0.05% of final value.

Note - the plug-in shown in the photos below has been modified with the addition of a BNC jack wired in parallel with the input binding posts - this is not present on the plug-in as supplied by the factory