Examples from the Web for dip circle
On December 21 the load on the sledge was stripped down to tent, dip-circle, theodolite, cooker and a little food.
We set off to scale the mountain, taking the dip-circle with us.
Besides his dip-circle, Norman also devised a simple and very apt illustration of magnetic inclination.Makers of Electricity|Brother Potamian
In several cases the tray was widened to receive as well a case containing a dip-circle.
Norman devised a form of dip-circle, and found a value for the inclination in London which was at least not very wide of the mark.