Tool Question (no, not what does 46 & 2 mean) Remote Tachometer

I figure if anybody knows......or has an opinion I'd actually listen to, it'd be here.

Here's my problem. I picked up another bike last weekend, a starter/first bike for my daughter. It needed a good carb cleaning and I've got that completed. I'll say this........it was absolutely the hardest carb I've ever had to remove and re-install on a motorcycle....... and the sucker has 63......yes 63 parts. Most complicated carb I've ever worked on.

Now I need to set the mixture and I want to...

Tool Question (no, not what does 46 & 2 mean) Remote Tachometer