~$19
Digital Caliper
Useful for woodworking, 3D printing and repairs where eyeballing is not good enough.
Woodworkers & DIYersScience Nerdspractical
~$25 typical price
A steel rule with a sliding head for checking square, marking 45s and setting depths.
Why it makes a great gift
A square you can trust is the start of every accurate cut, and cheap ones often aren't.
Useful for woodworking, 3D printing and repairs where eyeballing is not good enough.
Lets a tinkerer open and repair almost any gadget around the house.
Basic safety gear that every shop needs and many people forget to buy.
Basic layout tools that help a woodworker make accurate cuts.