000-100-102-648-C
Prism, known as Nicol prism
© National Museums Scotland
000-100-102-694-C
Prism
probably made in London
© National Museums Scotland
000-180-000-918-C
Nicol prism
probably made in London
© National Museums Scotland
000-100-102-689-C
Prisms, known as Nicol prisms
made in England
© National Museums Scotland