100mm/4" T4 SILICON WAFER ETCHED CIRCUIT FASCINATING RARE EDUCATION TECHNOLOGY THESE WAFERS ARE TRULY A PART OF SEMICONDUCTOR HISTORY. Dating from the  early to mid-1980's these wafers have etched circuits that look absolutely fascinating under a microscope. Take a look at the low resolution shots I have here and imaging the wondrous detail you could see under a microscope instead of an iPhone macro camera!! Each purchaser will get a single 4"/100mm wafer that is perfect in every detail - no cracks or chips.  These wafers make a great talking point and are fascinating for engineers, students or indeed anyone interested in technology. The detail is amazing. Embedded in lucite or mounted in a nice frame with appropriate lighting these can and do look stunning and would make a nice addition to anyones den or study. Great as an educational aid to show students how microelectronic circuits were made in the past and indeed are still made now - etched into pure silicon wafers, diced up and packaged. At this price - what are you waiting for?  Whilst you are looking why not grab yourself a GiffGaff SIM? Ditch your old mobile provider (you can even keep the same number) and sign up for GiffGaff for free.

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