What Is It?
   This apparatus is 58 cm in length, has a connection at either end, a drain or inlet with a stopcock in the bottom and four connections on the top. One of the top connections has a piece screwed in that is fitted with a stopcock and the the remains of some reservoir at the top. What is it?

   A good suggestion is that it was used to calibrate thermometers: low pressure steam came in one end and out the other. The thermomters were inserted in the small holes at the top and the condensate was let out of the bottom tap.

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