laryngoscope

I have a bin of old laryngoscope handles and another bin of blades for my medical mission group. I need a sort algorithm. Has anyone done this before? I'm considering using a caliper to measure some dimensions to classify which blades and handles would be compatible. I believe that I'd find...

There are many cases in which glidescope provides beautiful view of vocal cord but ETT can't be reached in the visual field. Why don't they provide guide channel for ETT as in many other video laryngo such as King's vision? Any idea? Also, there are two models of Kin'gs vision video laryngo...