Axis scale checking is too stringent

[mdoube]

Axis scale checking is too stringent. A small tolerance should be allowed because it's quite usual for e.g. XMT data to have a decimal place or two different between XY and Z spacing.

https://github.com/bonej-org/BoneJ2/blob/f64cc655a1ddbcee2ff91708bde0dbdc705b1b74/Modern/wrapperPlugins/src/main/java/org/bonej/wrapperPlugins/SurfaceAreaWrapper.java#L199