Resizing shapes in visio

[ActiveSecurity]

Please can anyone help?  I am a beginner in using visio and one of the worst problems is trying to resize an arc tangent to accurate measurements.  I have noticed that when I drag the handles the size does not increase in increments of one, making it difficult to get the required measurement.  Is there an easier way to do this?

[Visio Guy]

Hi A.S.,

Are you using a particular shape? It's not clear from your description what you are trying to do nor where your problem lies.

[ActiveSecurity]

Thanks for your reply.  After trying a lot different options I managed to work out how to do it!