One thought on “Haldane Apparatus – circa 1950’s”

  1. I used to use one of these in 1976 when I worked as a medical technician. It was very tricky to plunge the mercury far enough but not TOO far…

    Reply

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.