The Allied Gomco 01-90-3059 is a precision replacement vacuum gauge designed for Gomco 300 and 3001 series tabletop suction pumps. This analog gauge provides real-time monitoring of negative pressure levels, allowing clinical staff to adjust suction accurately during medical procedures. It features a durable stainless steel case and a clear, easy-to-read dial face graduated from 0 to 30 inHg. As an OEM component, it ensures the accuracy and reliability required for heavy-duty hospital and clinic aspirators, maintaining the performance standards of the Gomco diaphragm pump system.