The O1 Dimensioning Instrument looks like a pen and it IS but it’s also precision smart measuring tool that will help you get the right measurements the first time around. Also, it’s small enough to carry in your pocket or bag which is also nice.
This pen allows you to measure just about anything and then automatically captures those measurements and sends them to your phone through an app. The actual measuring is handled by the rubber bit, the laser is just there for visual support.
There’s a free app but there’s also a “pro” app that unlocks more features if you need them. The free version of the app logs your measurements and allows you to instantly switch between measurement types. The appeal of this pen is that it can more easily capture measurements that traditional products fail at. Also it does come with either a pen, pencil, or stylus equipped. The O1 Dimensioning Instrument is $149.99.