This is the process I'm using. Let me know what I'm doing wrong here.
I find a level spot on my surface plate. Mark the spot and rotate 180°.
Level does not repeat, this tells me it is not calibrated.
Okay so now I'm trying to find a spot on the plate where the bubble is exactly opposite when you rotate the level 180°. This will tell you that you've found a true level spot. Once you find this you can then use the adjusting screw to center the bubble.
The problem I'm having is I can not find a spot anywhere where the bubble repeats it's position exactly on the opposite side when you rotate the level 180°.
My post is probably hard to follow. Please ask questions and I'll try to clarify.
I find a level spot on my surface plate. Mark the spot and rotate 180°.
Level does not repeat, this tells me it is not calibrated.
Okay so now I'm trying to find a spot on the plate where the bubble is exactly opposite when you rotate the level 180°. This will tell you that you've found a true level spot. Once you find this you can then use the adjusting screw to center the bubble.
The problem I'm having is I can not find a spot anywhere where the bubble repeats it's position exactly on the opposite side when you rotate the level 180°.
My post is probably hard to follow. Please ask questions and I'll try to clarify.