The Gronze Groundplate xh (extra high) is specially designed for a Garrard 301/401. The Bronze Groundplate xh elevate the SME 3009/3012 to the optimal level so that the VTA can be adjusted optimally.
The Bronze Groundplate xh is not a common spacer, but a stable and solid foot for the SME tonearms. The SME 3009/3012 is firmly screwed to the bronze groundplate and for adjustment the complete tonearm including the bronze groundplate is moved. The tonearm can be moved by 12mm (+/-+6mm) for adjustment.