[LargeFormat] Measuring square?

[Jim Hemenway]

Years ago in art school, we cut our own out of excess mattboard... we
called them cropping squares.
-- 

Jim - http://www.hemenway.com



rstein wrote:
> 
> Dear Friends,
> 
>      I have been trying to remember what it is called, but it escapes me. I
> mean the measuring device that looks like two L-shaped rulers joined over
> each other with a locking collar that enables you to set an aspect ratio and
> then open and close the rectangle as you frame up a picture.
> 
>      I want to buy one to start drawing cropping lines on contact sheets -
> does anyone know what they are called and where they are sold?
> 
>      Uncle Dick
> 
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