Here is an even more explicit list of instructions:

-Focus your volume chart, press F6, add the Spreadsheet Study study from the left window to the right window.
On the Settings and Inputs tab:
-Set the Chart Region to 2.
-Press the Scale button and set the Scale Range to User Defined, the Top of Range = to the same value as your volume per bar setting (F5 >> Bar Period >> Volume per Bar), and the Bottom of Range = 0.
-Give it a name in the Spreadsheet Name field, e.g. Volume-o-meter.
-Set the Input Name >> Number of Rows to 10. No need to change any other Input Values.
On the Subgraphs tab:
-Set the Draw Style of K (SG1) to Bar
-Set the Color and Width to your choice.
-Press OK and OK.
When the spreadsheet appears, put this in cell K3:
=IF(ROW()=3,F3,0)

FYI re: spreadsheet studies:
-By default, the sheet#/tab position directly correlates to the chart number, so enter the formula on the sheet # that matches the chart #. Ignore the other sheets, if any.
-You can minimize the spreadsheet; it does not need to be visible.

Tomgilb,

Many thanks for that point by point series of instructions. You were so explicit one would have thought that anyone could have followed those instructions ... however clearly not me because (despite several attempts) I never got anything that showed the amount of lapsed time it took, for each volume-candle to form.

If it is not too much trouble, may I ask whether you have got this volume-e-meter spreadsheet study working yourself, and if so, could you possibly post a screenshot of what your volume chart with this added study looks like?

Once again many thanks for taking the time to show me the way!

Gidster

I misunderstood you. This grows a bar based on volume, not time. If you want the time duration of each bar, use the Bar Time Duration study.