new in box ,electro mag .. build a lie detector or trip wire alarms with led lightchasers ..40+ click together experiments ..now £5 never been used .

http://www.amazon.co.uk/John-Adams-3435-Electro-Mag/dp/B000S84JS8

I'll have this if you still have it

Great as a teaching aid

hi dr . i will pop it round the shop on mon if you want. im only round the corner

Great, thanks.

I won't be there but I'll leave a message for them

sold