15" Pratt and Whitney precision hand level in a wo

Made:
1923 in Hartford
15 Pratt and Whitney precision hand level in a wooden box.'

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15 Pratt and Whitney precision hand level in a wooden box.'
Science Museum Group
© The Board of Trustees of the Science Museum

15" Pratt and Whitney precision hand level in a wooden box.

Details

Category:
Industrial Metrology
Object Number:
1923-555
type:
calibrated level and verniers
credit:
Buck and Hickman Limited