Here's a couple of pages of egg scales.
buy and Bid Away!
http://www.meyerhatchery.com/get_item_jes_jiffy-egg-scale.htm
http://search.ebay.com/search/search.dll?from=R40&_trksid=m37&satitle=egg+scale&category0=
buy and Bid Away!
http://www.meyerhatchery.com/get_item_jes_jiffy-egg-scale.htm
http://search.ebay.com/search/search.dll?from=R40&_trksid=m37&satitle=egg+scale&category0=