Data Math Little Professor

Darth Detroit

Sr Member
I was surfing around and found the ORIGINAL Data Math Little Professor had calc bubbles in it. Are these the right size or are these the smaller red ones that Texas Instruments used?
 
The strip is the right length but there are 9 bubbles.
9 bubbles lenses are very common. You can even still find them in some surplus electronics stores.
 
Yeah, I kind of figured they wouldnt be 100% accurate, and need to be cut. This was just news to me and I was wonderingif anyone else noticed this. :unsure
 
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