If you just have two or three devices and their data, you could use a Normal distribution or Bell curve to plot your mean and standard deviation. But if you have more devices, I recommend you to use Box Plot. I made a sample for your problem and it looks like this.
HighLights
While Excel doesn't have original box plot support, you could draw this kind of chart easily using JavaScript libaries like HightCharts.js that I'm using for this sample. You could use Funfun to write and run JavaScript code in Excel, so that drawing a box plot like this would be easier in Excel. Here is the code that I used in the Funfun Online Editor:
https://www.funfun.io/1/edit/5a364ae474efa7334ff27269
The box plot could give the readers more information about your measurements. But you need to make some modification to your data. In this case, I used quartile and median to reveal the data. So in order to draw this chart, your data should look like this.
Minimum Maximum Lower quartile Higher Quartile Median
Device1 760 801 848 895 965
Device2 733 853 939 980 1080
Device3 714 762 817 870 918
Then, with the code in the link above, you could use FunFun add-in to load the chart directly into your excel using the URL above.
Disclosure: I'm a developer of Funfun