Yes, scaling is a Scrabble word!

Verb

1. Measure by or as if by a scale

2. Pattern, make, regulate, set, measure, or estimate according to some rate or standard

3. Take by attacking with scaling ladders

4. Reach the highest point of

5. Climb up by means of a ladder

6. Remove the scales from

7. Measure with or as if with scales

8. Size or measure according to a scale

Noun

1. The act of arranging in a graduated series

2. Act of measuring or arranging or adjusting according to a scale

3. Ascent by or as if by a ladder