The phrase "a gizmo called" is correct and usable in written English.
You can use it when introducing or referring to a specific device or gadget by its name.
Example: "I recently bought a gizmo called the SmartHome Hub that controls all my smart devices."
Alternatives: "a device named" or "a gadget referred to as".
The taps, like the ones in the new bathroom, are fitted with a gizmo called Tap Magic, which reduces water consumption by 75percentnt.
LG tells me it has a gizmo called an Upscaler, that makes every image look clearer and sharper, so even if you're just watching iPlayer, it will look like it's in HD.
On one shelf was a gizmo called a tie selector, basically a device that tells you what color shirt and tie to wear with various suits by rotating a wheel behind a cover with cutouts for each item of clothing.
She has succeeded with babies with Down syndrome, despite their poor muscle tone, and with adoptive mothers, using a gizmo called a supplemental nurser to bring in their breast milk ("Isn't that cool?" she marveled).
Because he's currently immobilized and can't climb up onto the space-station set, a gizmo called a "god box" has been installed in his trailer, just opposite the sofa.
Nancy Etchemendy's young-adult novel, "The Power of Un," features a middle-school student who operates a gizmo called "The Unner" to go back in time and undo past events.
She did so using a biological gizmo called a morpholino.
Until midsummer, that is, when the techies tournament-tested a little gizmo, called a pendulum tester, that measures not the C.O.R. but, rather, how long (in microseconds) a little weight lingers on the club face after striking it.
WORLD'S FAIRS The 1939 World's Fair in Queens introduced a futuristic gizmo called a television; no less significantly, it led to the creation of what is now known as Flushing Meadows-Corona Park.
We bought a $600 gizmo called WebRamp — a network hub, router and ISDN modem all in one.
I ended up buying a LifeSpan treadmill designed specifically to use under a desk, and a computer stand/desk gizmo called a Kangaroo, which is a platform that sits on my existing desk and can be lowered if I decide to sit and work for a change.
