Every mechanic needs this tool

[taranaki]

I think the last one I fired uses them regularly.

http://www.napavalleywww.com/diagnosticdice1.htm

[Amish_kid]

Haha never found a set of those in my dad's toolbox, probably hides them so I won't gamble away my money.

[GTStang]

Thats too funny

[TheNotoriousMogg]

good one bud...

[Heep]

They'd be good if you just use them to remind you of all the major possible options of why your car is, say, overheating, but people that actually roll them and do what they say are

[Steel]

lol! I should get a set for my friend who's a mechanic-in-training

[trevolutionist]

that's a classic