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Sorry to reply to such an old thread, but I'm wondering what people's long term experience has been with the digital inclinometers. I'm particularly worried that it will be impractical to use if it turns itself off.
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I got one and it remembers its datums, so its no drama.
If it turns off, i just turn it back on.
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I have thought of a reasonable alignment procedure. You still need a spirit level
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No spirit level reqd, just any surface you can adjust in small increments
( I use the top of the OTA of my Meade scope initially )
Just get the OTA "roughly level"
Place the inclinometer on the barrel and zero it.
Now rotate the inclinometer 180 deg
If its off, take out 1/2 the error using the OTA slomo,
then reset the zero point of the inclinometer.
Rotate the inclinometer 180 deg and repeat
When the barrel is perfectly level, the inclinometer will read zero
when placed either way on the OTA
The level is now set for a perfect datum within 0.1 deg.
Another sneaky trick i have found when going to a place where someone has a well aligned permanent mount ( and you are outside on a tripod )
is go into their observatory and put the level on their wedge.
Reset it to zero
Now go to your wedge and adjust till the level reads zero
Your latitude plate is now within 0.1deg of the pole :-)
Andrew