The ruler keeps wanting to retract. There is a lock (which must be set RIGID) but pulling the blade out even a little will unlock the lock and retract the ruler. The ruler has a wider and deeper curved blade to allow for more "protruding clearance". This more severe kink causes the blade to fold sideways and twist into a spiral that can only be recovered by retracting/re-extending. This is especially true when measuring along the ground. When using this ruler, I feel like getting the blade out and keeping it there is a constant competition. Otherwise, the ruler is easy to read and durable.
Digital multimeter RGK DM-12
6 Review
π§ UEi Test Instruments DAFM3B Digital Multimeter
6 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review
π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review