On 4/4/2016 10:44 AM, StephenS wrote:
> A gray scale anaglyph viewable with red/cyan 3d glasses.
>

>
> Not that I'm old enough to have used any of this stuff ;-)
>

Me neither. ^_^

One tool I had was a flat spline similar to the one on Wikipedia but 
with a square cross section. They were called something different when I 
was at school.

https://en.wikipedia.org/wiki/Lesbian_rule

Never used a pencil sharpener, always used a knife to put a square 
chisel point on pencils.



-- 

Regards
     Stephen

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