manual size adjustment program

I have few question. 1. You need to control size in cm of what? Picture? or Control showing picture. Should it be 1:1 on user input? 2. Web application or standalone application? 3. The whole application as example or just size control? Thanks.

Dear Client, I can developed the standalone application as in the reference you mentioned; if possible we could try to make it look more professional. Please let me know if you need any clarifications.

I can write this program for you. It will be useful if you provide more details about the project.

Hi! I can do this work! And I need some more details to make it match perfectly with your requirements!

I can make this as i have earlier worked in C# in converting pixels to real units on screen, if that is what you require.