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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Pocket Watch Slide Rules
SPC / Mechanical Engineer Large
Scientific Publishing Company
UK
Metal/glass/paper
1907-1910
Ø 6.4 cm
Basic Calculations
Notes:
The largest of the ME calculators is significant in slide rule history because it precedes the later well-known Fowler calculators. It may or may not be Swiss made.
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Image 7
