Oooooo i love my griddle Mine is rectangular with one flat side and one ribbed side and goes on two rings. I use it on the halogen and it's great to cook fajitas etc.. u can even defrost meat really quickly on it. Mine is rather large but you can get different sizes. I'll check and see what make it is but it's a good one. Don't tell dh though lol I bought it in a posh cookery shop's open evening after they'd plied me with wine
I earned a bonus in work last summer and asked the MD if I could order it on the company account, well he is a very careless man, he remembered to charge me for the hob and seems to have mislaid the VAT
It would be worth ringing your local plumb centre or equivalent, ordering it through them and collecting it.