Colin Goldie Overton low D tone hole sizes?

Whistle
1

Can anyone who has both tell me how the sizes of the tone holes on a Colin Goldie low D compare to a Howard low D?

Not looking for exact measurements, just a rough comparison of tone hole size and also reach.

Thanks.

–James

2

I don’t have a Howard, but here are my Goldie-Overton measurements.

Hole Size - wide x long (mm)
1 8.8 9.3
2 10.3 10.9
3 8.8 9.2
4 8.3 9.0
5 11.9 12.2
6 8.5 9.1

Hole Spacing - from bottom, to center (mm)
1 292
2 255
3 220
4 164
5 136
6 92

3

Thank you sir! :slight_smile:

–James

4

Hmmmmm… . . . now just where can a person buy an oval drill?

5

Ask Colin. :slight_smile: Measured with a digital caliper, and they’re definitely not circular.

6

Colin files the holes on the length-side of the holes. I think that’ll make the difference.

7

OK, I just took some quick measurements of my Overton low D, and the holes look round to the eye. But upon measuring I found them to be from .006’’ to .027’’ longer than wide. Fascinating.

8

I don’t have a micrometer, but going by naked eye, the tone holes on my high D Colin Goldie Overton also seem to be slightly oval.

–James