Door Gap Measuring Tool, 1-15mm Fire Door Gap Gauge Checker Tool Engineering Ruler, Feeler Gauges for House Engineering Inspection Flatness Measuring Tool Ruler(0.5mm/0.2mm) (0.5mm)

Used these on a job with very strict regulations on fire doors, very accurate and fits easily in your pocket or tool belt, a must with high end finish jobs. 👌🏻 Found the best way to use it is have the slider set away from the door margin until its inserted then slide it to the door for a more accurate read.

Fair item, I was expecting a bit more functionality then this but its dine not bad. The compatibility is fairly good as well

Excellent bit of kit. Does the job perfect

Does the job

As required

It's 'close enough' for joinery work, but for gaps of just a few millimetres it's not as accurate as I had hoped. I can probably improve it by grinding the back surface carefully.

That tool dont work for the doors as doors are shaped all the time and not square,my tool says 4mm this tools says 6.5mm,maybe it works for old door but not for new in uk.

Perfect for measuring size of door undercuts

Works as it should, very lovely thank you