Acme egg grading scales were produced by Specialty Manufacturing Company, St. Paul, Minnesota. In 1922, Acme inventor N.E. Chapman filed for a patent for what he referred to as an egg grading device. The patent was granted in June 1924. Early Acme egg scales were of aluminum construction. Each scale has nine fins that are lifted to determine an egg's weight. The weight of the egg lifts individual fins that rise until the precise weight of the egg is determined.
| px | px | dpi | = | cm | x | cm | = | MB |
Details
Creative#:
TOP23939845
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
No
Property Release:
No
Right to Privacy:
No
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1920s201924aacmeantiquarianantiqueapparatusapplianceasbycollectablecompanycontraptiondeviceeggeggsephemeraequipmentfoodforgadgetgimmickgizmogradegradesgradinghehistoricalhistoryinmachinemanufacturingmeasuremeasurementmeasuresmeasuringobjectofquirkyrarescalescalesscalingspecialtythatthetotooltwentiesuniqueutensilvintageweighingweightweightswhatwidget
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