by: Alicia Anderson My husband wanted a sonic screwdriver that he could use as a functional pen-light. He uses pen-lights to check people’s pupils on the ambulance, so it had to have certain features: Useful: Bright, white pen-light lightbulb Long-term: Replaceable bulb/batteries Safe: Not going to poke anyone’s eyes out The fourth requirement for this light was that it also had to be within my budget. I am buying him some reasonably expensive stuff this year, so “free and or cheap” was also ideal. Before we get started, you need to know what sonic screwdrivers are supposed to look like. They are devices that are frequently used by the Doctor on the BBC television series, Doctor Who. Like the actors who play the Doctor and the control room of the TARDIS, the screwdriver goes through changes and iterations over time. Here's one: Particularly the most recent, 11th Doctor’s (played by Matt Smith) There is no such thing as a us...
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