This Dwyer 1211-16 Slack Tube Manometer  is a reliable tool for measuring pressure and vacuum. It is manufactured by DWYER and comes in a new condition with its original packaging. it is suitable for use in various industrial and commercial applications.

It comes with a user manual that provides detailed instructions on how to use it effectively. With its accuracy and durability, this manometer is an essential tool for anyone in need of measuring pressure or vacuum it was originally purchased as part of the Lochinvar training for boilers and pool heaters.