Equilateral Prism(BA7A, SF10 or F2) 

·Dispersing prisms ·60° angles Equilateral prisms are normally used as dispersing prisms ， as well as standard BK7 prisms, higher index. SF2 and F2 prisms are offered to increase the dispersive power. Part No.                         A(mm)                         H(mm)                         Material            ·EQP-20B                             ·20                                   ·16.2                                   ·BK7A        …