Graphic Arts Scaling Tool

I am trying to find a tool I used to use as a designer, for scaling and cropping photos. It consisted of two L-shaped transparent, bright magenta acrylic pieces connected with a metal bar. I have attached a sketch. An internet search doesn't turn anything up, but maybe I don't know the proper name for this tool. Anyone remember?

Scale-o-graph

https://www.amazon.com/Graphic-Products-SH-20-Scaleograph-Black/dp/B07G36NXY8

Thank you very much.

Pantograph

Billy Axeman said:

Pantograph

Click to expand...

A pantograph is a different instrument, for tracing and scaling.