You get it in Narcene city from Bianca
the drowsing machine is a tool that lets you find items that you cant see without it
How do you pick up an item with the drowsing machine n pokemon platinum? I geuss it would be like Pokemon Diamond and Heart Gold. I love pokemon and from my experiences, when the drowsing machine beeps at a rapid pace in one place, press A (if on DS) even though nothings there. This answer is coming from a girl so that's pretty cool for me!
Dawn/Lucas gives it to you in route 207
You just look around beach's and have your drowsing machine out looking until you find one!
You go to Ecruteak City and go to a house near Burned Tower and talk to the man there answer Yes and he will give you the dowsing machine
you can go to a cave and use your drowsing machine to find it
It is outside the reception room. Warning if you are standing on the dot on your drowsing machine you wont find it.
In that one place by that cool place in that one town where Pokemon are.
Dawn or Lucas gives it to you at the end of Cycling Road.
yes use an action replay or a drowsing machine
No it's not possible that way, you get Member card in mystery gift
A pokemon that knows Charge can, but you will need to get a pokemon from Pokemon White that knows Charge. Same goes for those who own Pokemon White, you will need to get a pokemon that knows Charge from Pokemon Black to activate the time machine.