SCALE: Virtual Tabletops typically have a way to handle the scaling themselves and the measurement is in units. Not feet, meters, yards, or parsecs... units. For example, in MapTool you typically assign a pixel number per unit measurement. MapTool is usually 50 pixels per unit. What that unit is is entirely up to you. To use D&D as the example since most are familiar with it. Each square is 5'. That constitutes a unit. Therefore, based on the previous 50 pixels per unit, that would mean that you would have 50 pixels per 5' or 10 pixels per foot. I personally prefer to go up one doubling to 100 pixels per unit so that when I zoom in the image does not get pixellated. Therefore, it would be 20 pixels per foot. I think for most VTs that would be a maximum. Does that make sense?