Yeah, sure, I can use it by hand.
But if I want to use a WR-15 attenuator by hand, I'll pull the designed to be manual one from the shelf, not this one.
But thanks to the #hamkarelia2024 hamfest I got one of these for free by being in the right place at the right time.
Not only that, but I also have one from the same or related series with WR-62 flanges and it's my only variable WR-62 attenuator.
And I'd prefer that one to be easier to use as well.