Quote:
Originally Posted by Uncle Bulgaria
I don't suppose there's any easy way to check for squareness against the top-plate.
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When I worked for Sony I used to use an engineered 90 degree block as a guide for the zenith adjustment, it was designed to go right up to the head surface provided there was room on the deck plate for it to sit on. In cases where that wasn't possible I used the reflected light trick as per this Sony manual (last para in manual page 28 and the drawing in manual page 29):
https://elektrotanya.com/sony_tc366_.../download.html
Lawrence.