This is a well made classic circular bubble with horizontal and vertical liquid bubbles that are easy to read. I wanted it. There's also a large electronics module with a large backlit LCD: I wanted to try that. I haven't looked at the bubbles for several months: the digital display is much easier to read, there are several modes and audio feedback. .This is a game changer: you can now think in tenths when the degree is non-zero instead of "slightly off". The electronics switch off automatically after 5 minutes so that the battery lasts a while. Johnson's levels have a pedigree. and it looks set to stay strong for a decade.
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