Best Timing Light?

I picked up old green Inductive timing light at a yard sell. It's the oldest timing light I've ever seen and I'm no spring Chicken. I'd post a picture but I have 12 days left until I get back from work. For 2 bucks I couldn't pass it up. I don't know if it works but it looks cool as hell! IIRR it's an Arrow or Rocket brand.