Circular Paper Chart, Compatible with Manufacturer Model Number Class 15, Class 22, Class 45, Class 60, Class 70, Classic Servoline, DR 4500, Compatible with Series Universal, Lowest Generic Number Recorded 0, Minimum DC Current Measurement Not Applicable, Product Type Circular Paper Chart, Strip Chart Length Not Applicable, Grid Color Blue, Increment of Variation 10, Strip Chart Width Not Applicable, Highest Generic Number Recorded 100, Maximum AC Current Measurement Not Applicable