Name | Keuffel & Esser N < 4053 - 2 > S Polyphase Mannheim Adjustable, dated 1925 |
Front Scales | 8inch / A = B CI C = D K ] 20cm |
Back Scales | = S L T = |
Type of Rule | slide rule |
Material | Engine divided celluloid laminated mahogany |
Dimension (mm) | |
Area of Use | generic |
Origin of Rule | Michael O'Leary |
Match Number | 4104
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