Cheap timing light

[Speedwagon]

Harbor Freight has this $11 timing light:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=3343

Is there any reason it wouldn't work? I really don't need one that often, as most vehicles I deal with don't have a distributor. My Ranger is the only vehicle that does. So would this work for the very few times I'll need to check the timing?

 

[MAKG]

Should be fine.

The more expensive one with the advance dial is inaccurate, though. Putting the advance dial at 0 and timing the vehicle to 10 deg BTDC should be the same as putting the advance dial to 10 and timing to the TC mark. But it isn't.