Compass - Mining Dial Unmarked
This English Mining Dial retains most of its original gold lacquer.
The " E" and "W" compass points are transposed on a silvered dial 5 inches in diameter.
The spirit levels are in good condition and note that one of the spirit levels allows the compass to be used vertically to determine vertical angles from the calibrated lid and the distance correction from slope measurement to horizontal correction ( Diff of Hypo and Base )
The original mahogany dovetailed box measures 24 x 17 x 9 cm.
Although there is a Dollond Trade Label affixed to the inside lid of the box I do believe that the compass could have been made by A Abraham as the hand engraving is identical to the Abraham compass in my collection. Or, alternatively that the Abraham compass was " badged " after been made by Dolland.
I have included a photo comparison of the two faces for judgement. Apart from the pattern engraving similarities look at the oversize " 7" at 70, in each case.
In addition, the compass vanes are very similar.
This Mining Dial would be circa 1840 and weighs 3.1 kg in the box.