Buying guides
Which one, for the job you actually have
A hub compares everything in a family. A guide answers one question — a budget, a first multimeter for someone who has never owned one, a laser that will still be the right tool in five years — with a ranked shortlist and a reason for the order.
- Getting started
The first measuring kit: five tools, under a hundred dollars
The five instruments that answer most household measuring questions, in the order they are worth buying and with the reason each one comes when it does.
- Laser distance meters
The best laser distance meter under forty dollars
Three laser measures under forty dollars, ordered by the accuracy figure each maker actually publishes rather than by the range printed on the box.
- Digital multimeters
A first multimeter: what to look for, and what to ignore
Three multimeters ordered by the specifications that matter for a first instrument — the safety category, the fuse, and true-RMS — rather than by function count.
- Moisture meters
Checking a wall for damp: what a meter can and cannot say
Three moisture meters ordered by what they let you do — pins into timber, a ball sensor on a finished wall — with a clear statement of what none of them diagnoses.
- Cross-line lasers
Setting out a room: the laser, and the three things it needs
What to buy alongside a line laser so it actually works — a tripod, a target plate and, outdoors, a receiver — with the compatibility trap that catches most buyers.
- Thermal cameras
Thermal cameras: which resolution number is the real one
Two of three thermal cameras publish an upscaled image resolution alongside a much smaller detector. Here is how to read the figures, and what each detector size is actually good for.
- Digital calipers
Calipers: resolution is not accuracy
Every digital caliper displays hundredths. Only some publish how close those hundredths are to the truth. Three calipers ordered by what they actually state.
- Stud and cable detectors
Before you drill: the three tools worth twenty minutes
A detector, a voltage tester and a marker, with a clear statement of what a detector can and cannot promise before a hole is made.
- Tiling
Tiling: the four measurements that decide the job
Level, square, gradient and datum — the four things tiling depends on, and the instruments that establish each one.
- Budget picks
under twenty dollars: the instruments that still publish a figure
Five instruments under twenty dollars, chosen because each one publishes the specification its category is judged on — which most of their competitors at the same price do not.
- Electrical testing
Electrical testing: the order to buy the instruments in
A two-pole tester, a socket tester, a multimeter and a clamp — with the safety specification that decides where each one may be used, and how often it is actually published.
- Battery-free tools
No batteries: the instruments that always work
Five tools with nothing to charge, nothing to go flat and nothing to fail silently — and why that matters more on a measuring instrument than on anything else.