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Item# | Type | Model No. | Model Name | Maker | Country | Material | Diameter | Date | Condition |
LOR006 | Pocket | Type 2 | Lord's Calculator | W. Wilson | UK | Nickel-plated brass | "2-1/2" | c. 1895-1915? | C5 |
Notes: Fixed Outer Ring: A scale - 10-100 logarithmic; Moveable Ring: B scale - 10-100 logarithmic (top knob); Moveable Inner Disc: C scale - 10-100 logarithmic jwith cursor attached (second side knob); Moveable large cursor (first side knob). Extra fixed scale on outer ring between 70 & 85 running from 20 at 70 to 0 at 85.
Click on the Condition Code to obtain more details.