i have a little project that i am on right now which every weekend mechanic and diy'er should have: a timing light and tach/dwell digital meter. this tools are commonly used to time the engine and carb tuning along with a vacuum gauge and a compression gauge.
if anyone is interested or can share some ideas or links of diy is most welcomed.

btw magkano ba ang commercial grade na timing light at tach/dwell digital meter(auto analyzer)?

eto lang alam ko since i bought one sa banawe:
vaccum gauge - P1100