Use this ramp to compare how things move on different surfaces and the effects of friction on the different surfaces.
Contains four different surfaces (plain wood, foam, carpet, sandpaper), ideal for compare and contrast and fair tests.
Length: 80 cm
Width: 80 cm
16 Apr 2016
Don't know because I haven't received it yet.
Our ResponseThank you for your recent feedback. Please accept my sincere apologies that you have not received your item yet. I will arrange for a member of our customer experience team to contact you regarding this. Kind regards
25 Feb 2015
Good item as described.
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