Depending on the application, these small devices have a very good price-performance ratio. We use them to monitor some of our lab ovens. They are good for general checking but are not as accurate as some of the more expensive models.
Room temperature and humidity sensor Aqara Temperature and Humidity Sensor white
25 Review
Detector Bosch GMS 120 Professional
28 Review
Xiaomi iHealth Meter Thermometer White
24 Review
VIVREAL 4 In 1 Stud Finder Wall Scanner With LCD Display - Center Finding Beam Finder And Sound Warning For Wood, AC Wire, And Metal Studs (Black/Silver)
24 Review
π CAMWAY 6 Inch Digital Caliper with LCD Display, Electronic Vernier Caliper, 150mm Stainless Steel Feeler Gauge, Plastic Digital Caliper Set for Zero Setting Inside/Outside Diameter, Depth, and Step Measurement Tool
3 Review
π² Johnson RAS-1B Johnny Square: Professional Aluminum Rafter Square, 7'', Silver - Top Quality with 1 Square
8 Review
Kapro 307-08-TMS Try And Mitre Layout And Marking Square With Stainless Steel Blade, 8-Inch Length
18 Review
Triangle Group TR918 225/45 R18 95V summer
61 Review