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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Circular and Spiral Slide Rules
Mascot / Tavella
Mascot
USA
Celluloid
1934
Ø 6.9 cm
Basic calculations
Notes:
Mascot may or may not have been the maker but it was retailed by Tavella Sales Co. for many years.
Image 1
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Image 3
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Image 5
