Vintage quality see-through slide card, designed by Prof. Dr. So / Alpha 1 from Germany
Language : German
Used for heart frequency measuring and interpretation of EKG-machine prints
Periode of production / use : 1970
Size (width) : ca. 20 cm or 8 inches
Material : Plastic
Condition :working with signs of normal use and age only, no cracks, no parts missing, not coming apart.
I have a lot of slide cards for sale. When you put ca. 8 in your shopping card you will automatically (at 100 euro) receive a 10% discount. Also shipping costs will be added automatically. If you have any questions, please contact me via the contact page.