Prism - Equilateral D2-2985.00, £22.50 Made of glass with polished faces. Triangle side 34 mm, height 35 mm.
Crown Prism D2-2985.20, £94.90 Triangle side 30 mm. height 30 mm.
Flint Prism D2-2985.30, £85.00 Triangle side 30 mm, height 30 mm.