484. Organ pipe

485. Grey Rock brake safety gage


486. Eel spear

487. Gray Brothers Golden Corn Sheller, Louisville, Ky., patented in 1870, used to remove dry corn from the cob.



488. Soroban, Japanese version of a Chinese Abacus


489. Clothes washing machine

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485. Grey Rock brake safety gage
486. Eel spear
487. Gray Brothers Golden Corn Sheller, Louisville, Ky., patented in 1870, used to remove dry corn from the cob.
488. Soroban, Japanese version of a Chinese Abacus
489. Clothes washing machine
Back to What is it?