Optical Dumpy Levels

Optical Dumpy Levels are an older technology these days but still occupy a place in the levelling tool range.

Also sometimes called auto levels are automatically levelling once they have been manually roughly levelled into their self levelling range using a bulls eye vial.  Once the bubble is any where inside the circle the dumpy levels itself.

The operator looks through the dumpy and can read off heights from a cross hair in the view finder.  Dumpy levels are potentially incredibly accurate but do need two people to operate.

 

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