Instrument - Abney level - Clinometer, Abney level - E.R Watts & Sons Ltd

Historical information

Training Forest mensuration exercises

Physical description

An Abney level and clinometer is an instrument used in surveying which consists of a fixed sighting tube, a movable spirit level that is connected to a pointing arm, and a protractor scale. An internal mirror allows the user to see the bubble in the level while sighting a distant target.

Inscriptions & markings

E.R. Watts & Sons, Ltd. No. 39931

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