antonio
3
Have the owner tune it up to standard tuning and then re-check.
You can use a credit card or coins to check the E string at the 12 fret for about 2 to 3/32" ~ 1.75 to 3 mm
Edit: The strings are also rusty, which means the bass probably hasn’t been played recently and is not the greatest buy.
Also, check out this thread for setup info:
2 Likes