The Swiss Bobbin Knotter II tool, is a nice piece of Swiss craftsmanship from Petitjean Fishing Equipment.
With a little practice you can quickly make strong, low profile connections between braid and mono/fluorocarbon lines, 20-200lb or 0.6-2mm diameter.
The adjustable drag and two bobbins(light/heavy) control the tension for perfect high-precision FG and PR knots.
For more information: www.petitjean.com @AnglingKnots
Check out the easy to follow step-by-step knot illustrations in the publications:
Fishing Knots – From the reel to the hook:
Fishing Knots & Rigs:
The Fishing Knots Posters:
https://fish-and-bits.myspreadshop.co.uk/all
or
https://fineartamerica.com/featured/1-fishing-knots-andy-steer.html
Disclaimer:
No responsibility in any way is accepted for incidents arising from the use of this material.