Using the Golden Mean Finder for determining ratios, reductions, and proportions:

By removing center arms and resetting the pivotal connection of legs A and C to the desired comparisons of sizes, the instrument can now be used to determine and/or prove a particular ratio between objects.

Proportion04In this example, we wish to reduce the length of the shell for our paining to approximately 35% of the original length. Once the shell length measurement has been made, simply use the smaller end as the length of the shell in your painting.

The holes in the main arms enable proportions ranging from 25% to 90% reduction.

You can also point the small end at the object, the
shell in this example, to get an enlargement.

 

This is of particular help to artists when there is a need to maintain the correct proportions of their subject, and for art judges when verifying proportions.

 

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