It’s not a jazz tune by a lab tech. It’s the quantity of enamel that nicely fills the space for the Blue Diamond insignia on a Parker fountain pen clip.

Speaking of clips, the image above is a still frame from a video clip of that 300 nL being dispensed via a positive displacement micropipette that I fabricated; though I like blues, I don’t like improvising when it comes to pen restoration tools.

Some finished products: