|
Image
|
Source
|
Observations
from the source
|
|

|
Gallenkamp
(1930s)
|
Copper boiler or hypsometer
|
|

|
Gallenkamp
(1930s)
|
Copper vessel for determining the
freezing point of a thermometer
|
|

|
Gallenkamp
(1930s)
|
Specific heat apparatus, Tyndall’s
|
|

|
Gallenkamp
(1930s)
|
Marcet’s
boiler, or Papin’s digester
|