The general location for the site is Chichester. The common road links Havant to Chichester. From Havant go to the B2146 to Funtington. From Chichester B2178 heading towards East Ashling. The time machine is in between the two villages. Take the wood end turning off common road and bear right.
Nearest post codes PO18 9DH

By car, Type PO18 9DH into navigator. B2146-B2178
By bus, comes from Petersfield to Chichester
By Train, to Chichester then bus stop to the TimeMachineFun Centre.

Click on the map to go to Google maps. You will see reference to PO18 9DH, nearest post code, that's just past where the old chapel is, inside is the Time Machine.