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<DIV>The first guess would be that the head has a manual guide adjuster on
it. This was on the Mark 15 heads. </DIV>
<DIV> </DIV>
<DIV>But there were some machines that may have not used the auto
guide assembly. I say this as the guide was listed as an accessory in the
set of books. </DIV>
<DIV> </DIV>
<DIV>So does anyone know if there was a machine that did not have the electronic
guide assembly in the VR-1000, 1100, or 1200 series. How about the E
models that were the low boy so called portable units? Or the
1100's?</DIV>
<DIV> </DIV>
<DIV>Now Mark 10 heads could be used in earlier machines. There was a
trimmer module that replaced the nuvistor or transistor pre amp that allowed
this.</DIV>
<DIV> </DIV>
<DIV>Chris Hill</DIV></FONT></BODY></HTML>