Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Universal ring dial
Brass universal ring dial. Inner disc swivels to 180 degrees, central brass sight band has initials for months of year on one side and numerical rule readings on the other.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.