Gauge rule (1 of 2)
probably made in London

© National Museums Scotland

000-100-104-255-C

Gauge rule (2 of 2)
probably made in London

© National Museums Scotland

000-190-002-214-C

Gauge rule (detail) (1 of 2)
probably made in London

© National Museums Scotland

000-190-002-215-C

Gauge rule (detail) (2 of 2)
probably made in London

© National Museums Scotland

000-190-002-216-C