Hi Robin,
That's interesting to know, your dec scale is out by around 4 deg. This sort of makes sense as I was drift aligning Friday night and all of my adjustments were pointing to around 30 deg on my scale, I though my observatory was on the tilt. This inclinometer from Bunnings might be the go.
If there is anybody out there with an Skywatcher EQ mount could you please give us your reading from your dec scale and what your true dec should be. Just curious and might be interesting to find an error margin.
This could be interesting.
Paul
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