Tascam Porta 7 knob

These were from a Porta 7  size 22mm x 14mm

I thought these were the same as the Porta 5 but they are not, a good customer pointed out there is a difference.

Put the knob on your desk with the spigot upwards and the round  little marker pointing to 12 o'clock you will see that the D shaft hole is correct it looks like a D , the Porta 5 has a mirror image and a square marker.

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