We have recently visited this museum, after a gap of many years. There are many different aspects to this museum which is built within a former chalk quarry. There are items of interest to do with the history and workings of the quarry. There are local crafts which are sometimes demonstrated, such as wood turning, besom broom making, stained glass, and pottery.
For those interested in transport you can ride on a train, and a bus. This is included in the entrance fee. Sometimes you can ride on a trailer towed behind a traction engine.
There is a working prints shop, garage, and a exhibition area on the history and development of radio communication and ultimately television.
The museum is always developing new attractions, and undertakes conservation work. You can see a skeleton of a bus that is undergoing restoration.
If you visit the museum you can return for a second visit within five days. This we did as we found we were unable to see everything in one visit.
The railway station at Amberley is literally on the opposite side of the car park, so public transport is a option.
There is also a short nature trail, and a walk to the top of the quarry to admire the view of the Sussex countryside.
I would recommend visiting on an activities day as more of the site is likely to be manned by the volunteers.