Excellent video. Would probably never have attempted to do my own TBS prior to watching. Now feel I could manage it ...just have to find the gauge... Harbor Freight?
Thanks!
Probably not Harbor Freight for this one, although they may sell the "Dial" type gauges.
Basically there are two ... Motion Pro and Morgan Carbtune. There are a few others but these are the basic choices.
The Motion Pro was good value when I bought it for $40, but it now seems to be around $70, so it's not such an easy decision. It is a manometer style that uses fluid that evaporates ... It can be replaced. It works very well if you are diligent.
The Morgan Carbtune is the instrument you really want. It comes directly from the UK for about $100, and is light years ahead of the Motion Pro.
This is not an area to skimp on the tool. You will only ever buy the Carbtune once, and don't be too OCD about getting the sync exact to the millimeter of column height, it isn't necessary and it will drive you nuts. Get all four close, and that will be more than good enough.
ps ... you can make your own for less than $5. That said, they are tricky to get right and finnicky to use, but home-made manometers will get your TBs sync'd just as well as the Carbtune if you know what you are doing. Personally, I bought the Motion Pro because I was poor. If I was buying again I'd spring the $100 and be done with it.