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How an hourglass is made
- guelo 15y agoWow, that looks like a lot of equipment and labor for a product whose market can't be very big.
- jergosh 15y agoPrices start at EUR 9500 so it must be a niche product ;)
- pedrokost 15y agoCan someone explain how they manage to 'calibrate' the hourglass to 60seconds (or whichever time they choose)? Is it done by trial and error or they can make hourglasses so precisely that they the width of the slit precisely determines the time-length? I doubt such precision can be achieved in manual labor.
- bradleyland 15y agoThe orifice size needs to be fairly consistent, which requires talented artisans, but some variation is unavoidable, so they have sands of different coarseness for varying sizes. The timing is calibrated by adding/removing san [1]. Scroll down to "The Manufacturing Process" in the footnote link. 1 - http://www.enotes.com/how-products-encyclopedia/hourglass http://www.enotes.com/how-products-encyclopedia/hourglass
- deleted 15y ago[deleted]