Vintage Flow Calculator Gauge Set – Gas, Steam & Tank Capacity

This unique set of three vintage flow calculator gauges includes a gas flow calculator, a steam flow calculator, and a tank capacity calculator. Designed for quick and accurate reference in industrial, engineering, utility, and mechanical applications, these precision instruments represent an era when specialized calculations were performed using durable analog tools rather than digital devices.

Each gauge is engineered to provide rapid calculations for its intended purpose, making them valuable tools for professionals working in gas distribution, steam systems, tank management, process industries, and related technical fields. Their compact design and straightforward operation made them indispensable shop and field companions for engineers, operators, technicians, and plant personnel.

Today, these gauges remain useful reference tools while also appealing to collectors of industrial instruments, engineering equipment, and vintage technical devices. The graphics, scales, and precision construction make them fascinating pieces of industrial history and excellent conversation starters in any workshop, office, or collection.

Whether you're adding to a collection of vintage engineering instruments or seeking practical specialty tools for reference purposes, this matching set offers both historical interest and professional appeal. A hard-to-find grouping of specialized industrial calculators.

Measures 9" by 9", and tank calculator measures 6" by 6".