Circular Paper Chart, Compatible with Manufacturer Model Number AR-100, DR 4200 GP/EV, DR 4300, DR 4311, Compatible with Series Universal, Lowest Generic Number Recorded 50, Minimum DC Current Measurement Not Applicable, Product Type Circular Paper Chart, Strip Chart Length Not Applicable, Grid Color Black, Increment of Variation 20, Strip Chart Width Not Applicable, Highest Generic Number Recorded 250, Maximum AC Current Measurement Not Applicable, Maximum AC Voltage Measured Not Applicable