Heavy-duty analog ammeter designed for industrial and commercial electrical applications. This 300-ampere meter features a compact 72mm x 72mm panel-mount design, making it ideal for tight installation spaces. Direct-reading scale provides quick, reliable current measurement without additional equipment. Durable construction withstands demanding environments and frequent use. Essential for monitoring electrical loads, troubleshooting circuits, and ensuring safe system operation. Suitable for switchboards, control panels, and distribution systems requiring accurate amperage monitoring.