When setting up memory channels for example for Satellite or Repeater use, its handy to have a quick way of making sure the transmit frequency and other parameters such as CTCSS are correct.
Nothing worse than failing to make contact and then eventually (when its too late) finding that when setting the CTCSS tone, you were one knob click off the correct one.
I find the Surecom SF-401 Plus a convenient and fairly inexpensive device for this.
Its light weight but doesn’t feel too fragile, has a rechargeable battery with auto turn off feature, and while a colour display isn’t essential, having it makes the counter nicer to use.
Its not a tank, like my OptoElectronics Scout, but that doesn’t do CTCSS and might be finding its way onto e-bay soon.