Checked the flatness of my board and yet my instruments slide under the parallel. Is there an adjustment for this?

Best Parallel Line for the money anywhere!

The deetailed instructions were easy enough to follow, but they did require close attention. It feels tight. So far, so good.

Installed it on my glass drafting table and it looks and works great so far.



I fastened the rear wire connectors to angle brackets at the back of my table.

 

Works great. Looks good. Easy to assemble. Some reviews said that theirs was bowed in the middle, but mine was perfect. No problems at all.