Hmmm... Wonder if there is a way to calibrate one's vacuum gauge... other than send it in and pay?
Might be a good idea to check every so often.
Galatians 2:20-21; Colossians 1: 21-22 & 26-27; 3:1-4; Romans Ch's 5-6-7-8
2 Chronicles 7:14
Quality work at a fair price with excellent customer service.