... general environmental conditions.Standards and certifications,The Jingying series of pointer meter is produced on the standard of GB/T7676-1998, and ... of IEC60068-2-27.Accuracy level,The JY series of pointer meter: AC and DC voltmeter and ammeter to the level of ... (the dial can be replaced), For the JY series of pointer meter, you can open the sealing, insert or outer the dial ...