Used Sony MCI JH-114 JH-24 Tach Roller Base Assembly And Roller. This is the assembly that holds the tach roller, to the right of the head assembly. The base includes photo-interrupter components that send tach signals to the tape timer. The roller surface has most of it's original rough surface, which is necessary to prevent slippage. Fully guaranteed. 

Note: this is the later type that is used with machines having the Autolocator III. It is not compatible with machines using the Autolocator II, which use a roller with a larger diameter.

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