Fancy looking tensioners on ebay.

[David King]

Automated Tooling Systems Wire Tensioner PB202 1R | eBay
I can't find any info on these on the ATS site but they sure look cool.

[David King]

So the PB202 1R is for 30g-100g of tension. It's a closed feedback loop system and it requires a "master controller unit PB 202-Z". The master controller unit can handle up to 32 tensioners at a time.

The PB202 2R is the one to look out for as it handles 10g-30g tensions.