Technics Overhang Gauge for SL-1200 Turntables (boxed). [Compatible Models] Can be used with Technics SL-1200 series turntables (15mm overhang models). [Product Description] Used to adjust the cartridge to the optimal position on the arm of the SL-1200 series when attaching it to the headshell. It is standard equipment for the SL-1200 series. It can often be used with other record players that have the same 15mm overhang as the SL-1200. All included accessories are shown in the images.