Q: "Do you sell an instruction booklet for your Riester Model #R3400 Otscope and Ophthalmoscope?" Thank you. Barbara M"
Answer: No, this is a professional model and comes with no instructions for use. Instead, I suggest you purchase a book we sell called Ears, An Owners Manual. We've had much positive feedback on this book. We order 50 at a time every few months.
Sincerely, Barbara