Ocarinas
Adventures with 'other' instruments...
Hi Eileen,
That's very cool! There's a fellow in New Zealand who makes wooden double ocarinas where opne side is a drone note, and they are made with an interval that sounds rather medieval...sounds so pretty! -see the pure white wood one on the middle of this page, with a sound clip: http://www.wood-n-bone.co.nz/musical_instruments.html
I didn't keep up with learning my ocarina. However I did actually learn to play the bones in the end ok (yay), and I'm making progress on penny whistle now...which is sort of vaguely related to ocarina I suppose?...I mean, you blow into both of them at one end and cover the various holes to make music, right?

The bridge was NO problem. It was tuned beautifully open and also on the 7 fret. The subtle smudge was enough of a guideline.
I'll bet you dusted the fretboard as soon as that last string was off, too -- didn't you?
Instantly removing almost all hope that there was a mark where the bridge had been....
Now yer gonna haft do things the hard way.
to tell you how far it is between the inside edge of the nut and the inside edge of the bridge -- in millimeters would be best -- not many measuring sticks are marked in 10th of an inch. Then get out your millimeter stick and measure down the distance twice -- once on each side -- and draw a line between them with a pencil.