reading timing scale

[drotti2004]

I have a 1968 mercruiser 160 that needs timing set to 6 degrees btc my scale has a A at one end and a O at the other no numbers just lines could someone tell where 6 btc would be on the scale?

 

[Don S]

Re: reading timing scale

Three marks up from the 0 towards the A is 6? BTDC.

 

[drotti2004]

Re: reading timing scale

thanks Don