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Letter scales Pic Letter 87 Very hard to find US
letter scale / rule combination. Patented by G.D.Wyckoff
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Each end of the rule has a
wooden plug. Both plugs are removable. |
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| One has a clip... |
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| and the other a pin |
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On the back of the rule is
shown a graduation from 1/2 oz to 4 oz. The pin is in use to work as weighing point and indicator. Use the pin in the 1 oz hole.... you can weigh a 1 oz letter. |
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