They have a lot of good info on that site, so does look legit and ISO9001 so should be a decent product in the end. Check the reviews for their wrenches, some places are so specialty serve aerospace or industrial process they carry wrenches but not always their niche market. From what I saw quickly I would try one out, but I have a ton of wrenches so no big deal if it's a dud.
One thing that is funny from their Amazon add "Because other “dual scale wrenches” are calibrated in one unit of measurement, the primary scale, and the other unit of measurement is only a reference." Correct statement buy a ft Lb wrench and use it for nM and you need to do some math and vis versa. The nM scale is always funky readings on the ft lb tool. Nice option sounds like you can set this in normal readings for both scales, will save time and effort.
As far as cal goes IMO It's a simple press of a button to verify the ODD nM scale on a ft Lb wrench if you ever need that part of the tool, when we do them at some point the adjustment is made on primary scale and then rechecked on both scales, but the formal cal reading on our sheet are only one scale. They look to be digital and check and provide both readings, an extra step for sure. But its all automatic readings and set up when checking, 18 checks vs 9, I'm not in the market for nM so ft Lb (Or in" Lb) only cal check and primary scale is just fine.
I have over 30 different torque tools for my shop. Along with some decent calibrator checking systems for verifying them every 6mo. Not a production line shop.
Protorquetools.com
These are snap on wrenches half price most ofnthe time, or wait a few months and will be on sale.
They ship from snap on most of the time.
Great tool. Great price.
https://www.protorquetools.com/cdi-...2-nm-micrometer-adj-torque-wrench-dual-scale/
I am cautious off Amazon because one of my tech's bough 2 torque screwdrivers without asking off there, will add the name later, they sent them up to the shop for cal check and a 2nd tech spent 4hr messing with this POS $60 tool, I was not happy, toss the thing in the trash pick up one of the brand new CDI off the shelf and get back to work.