Postal Letter Scale Brass Parnell (0647)

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Index: 0647
Year: 19th century?
Maker: Parnell, London
Dimensions: 13 x 0,5 x 7 cm

Info

On this scale the indication needle is kept vertical while the body rotates depending on the weight. The scale is from 0 to 40 grams and is non-linear.

References/Links

Le Compendium

Images

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Wattmètre de Precision (0307)

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Vertical Collimator (0614)