Is there a way to scale up/down or scale with the gumball an object’s length by entering a value of “by how much” verses having to measure the full new length I desire and typing it in? Like a subtraction or addition formula for scaling?

For example: If I have an object that is 12 inches and I want to scale it down by 1/4". Currently I have to measure the item I want to scale (here I see it’s 12 inches), so I type in the new value of 11.75". What I’m looking for is to simply subtract 1/4" WITHOUT having to measure first and then enter the new full length measurement I desire.

Do I enter -1/4" in parenthesis, braces, or is there an equation I should be using to achieve this?

I feel silly, but I’m stumped and can’t figure out how this is done in Rhino.

Thanks!!