This is actually a dentists tool. They need to be accurate in their work,much in the same way fly tyers (sometimes) need to. I use this when preparing wings for streamers and wet flies, and in particular when tying Catskill-style. The tool is not expensive and you can probably get one from your dentist. Choose from either the used or the mint condition category.
The Heckham Peckham is yet another pattern from Aberdeen fly dresser William Murdoch. Originally a sea-trout patter,but works great for trout. When the wind blows tall and the mayflies are hiding in the bushes this thing might to the trick. I choose to tie it with a seal fur body,altough many use floss. I think it´s a free choice and up to the eye of the tyer. I think it is one of the most beautiful classic wet flies. This is also tied in tribute to one of my mentors,Per Rune C.,as this was one of his favourite patterns back in the old days. I usually tie up a few for the season. Nice to have if the bad weather hits you in the mountains,besides there are also sentimental reasons to carry this pattern in my box.