What does "volumescope" mean?

Volumescope: An instrument consisting essentially of a glass tube provided with a graduated scale, for exhibiting to the eye the changes of volume of a gas or gaseous mixture resulting from chemical action, and the like.

Additional senses

  1. 2.An instrument consisting essentially of a glass tube provided with a graduated scale, for exhibiting to the eye the changes of volume of a gas or gaseous mixture resulting from chemical action, etc.

Sources