Vacuum flask
Dewar
Category
Glass
Date
Unknown
Materials
Glass
Measurements
197 mm (Diameter)242 mm (H)
Collection
Cragside, Northumberland
NT 1226117.2
Summary
A Dewar flask, hollow glass ball with reflective surface finish and small uncapped opening. An early type of vacuum flask developed by Sir James Dewar in 1872.
Provenance
Armstrong collection. Transferred by the Treasury to The National Trust in 1977 via the National Land Fund, aided by 3rd Baron Armstrong of Bamburgh and Cragside (1919 - 1987).
Makers and roles
Dewar , manufacturer