
I machined and sanded a 6 inch parallel and used #8-32 nuts and bolts to make it height adjustable. From the packaging, what's holding the bottle actually protrudes slightly from the body. For the price you get an accurate ampoule but you have to mount it on something very flat and make it adjustable. Once you do that, you'll reach levels comparable to those that cost hundreds of dollars!

π SKIL 24-Inch Digital Level - LV941901
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π Kapro 905-41-24 24-Inch Level Tool - Premium Bubble Level with Shockproof End Caps, Superior Accuracy & Visibility, Optivision Red and Plumb Site Dual View Vial, Condor Spirit Level
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DigiPas DWL80PRO: Compact Digital Level & Angle Gauge - Accurate Protractor, Bevel Gauge, and Angle Finder, 0.05Β° Sensitivity, 4 inch Pocket Size
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