Replacement prisms last updated June 2020 so OUT OF DATE I will do a stock check asap (August 2021) I have over 150 different sizes of prisms in stock. I have not carried out a stock check for some time but I believe I have at least one of each of the following sizes. Please note that even 0.5mm can make all the difference between a prism fitting or not. All measurements are in mm. Prisms cost from £2 to £12 each but as Zeiss Jena prisms are so difficult to obtain, I do not sell them.
Column One is my stock number. I know it's strange but it has evolved over 30 plus years. Column 2 is the length of the base. Col 3 is the height. Col 4 is the width. Col 5 is the shape of the base. Standard; wedged or rectangular. Col 6. In some sizes you have the choice of Straight sides; one sloped side or two. Col 7 gives any special features, such as a cut base.