Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Calipers
Electrical machinery 'lockout caliper' and lock. Used to isolate electrical machinery while mechanic was working on it. Used by the donor at Rose Heyworth Colliery, c.1982.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.