Help needed for Bronica eye correction diopter

I need an eye correction diopter for a Bronica Etrs AE11 prism, I have tried
all of the shops in the UK but alas nobody stocks them in the + correction.
I need a +.5 or +1 if there is anybody in this newsgroup that can help me I
would be very happy


RS

Are you CERTAIN that you need this strength? the reason I ask is that
a person with NORMAL vision has a standard eyepiece strength which has
a diopter value of -1.5 dipters, so corrections to that are NOT the
same as buying a vision correction lens in the drugstore for reading!

Eyepieces for the ETRS prism finder were -4.5, -3.5, -2.5, -0.5, +0.5
and +1.5, so you would buy a +0.5 only if your vision required that a
+2.0 diopter correct were need (-1.5 standard + 2.0 correction = 0.5
eyepiece)