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Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
Type 1
Lord's Calculator"W. Waddington, Coventry"UKNickel-plated brass"2-3/4"c. 1903-1918

Notes: "Serial number 115 inside case. Fixed Inner Disc: A scale - Reeds and Picks from 100 to 40, W scale - Percentages 0 to +80 and 0 to -40. Glass lens has single crack."

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