rwolff
Enlightened
My latest Dollarama find (unfortunately no pics of it) is an "invisible ink" pen (twist barrel to extend/retract) with a UV LED (also throws some visible blue/purple) in the top, with a momentary switch beside the pocket clip. The price is a VERY reasonable $1, and is packed with 4 spare button cells.
In a quick test, it picked up the flourescent fibres/inks in Canadian money, and dried urine (been a while since I last cleaned the toilet).
A couple pointers if you go for this light:
- The markings on the package are WRONG (says it takes 2 button cells, but it takes 3).
- It's a PITA to change the batteries (small diameter relative to thickness - IIRC, they're AG3) because they want to flip over. Best bet is to load up the stack on the spring, then slide the light assembly over it.
- Because of point #2, try squeezing the package to turn on the light before you buy it - if it lights, then you won't have to change the batteries right away.
In a quick test, it picked up the flourescent fibres/inks in Canadian money, and dried urine (been a while since I last cleaned the toilet).
A couple pointers if you go for this light:
- The markings on the package are WRONG (says it takes 2 button cells, but it takes 3).
- It's a PITA to change the batteries (small diameter relative to thickness - IIRC, they're AG3) because they want to flip over. Best bet is to load up the stack on the spring, then slide the light assembly over it.
- Because of point #2, try squeezing the package to turn on the light before you buy it - if it lights, then you won't have to change the batteries right away.
