How Do I Read A Dial Caliper ? ? ?

[SCHOONER]

HI GUYS

HERE I AM AGAIN. YOU GUYS ARE REALLY TEACHING ME THINGS ABOUT AN ENGINE I NEVER KNEW AND I THANK YOU ALL FOR YOUR EXPERIENCES.

SO HERE WE GO:

I TOOK A COMPRESSION ON MY ENGINE AND 3 OF THE CYLINDERS WERE READING 105,102, AND 110 AND THAT AIN'T GOOD.
SO I FIGURE WITH ALL YOU HELP THAT I GOT TO GET MY '66 'STANG WITH A 289cid TO THE AUTO MECHINE SHOP TO HAVE THE CYLINDERS OPENED-UP TO THE LEAST AMOUNT OF GRINDING.

FROM WHAT I UNDDERSTAND (and that ain't much ) I SHOULD NOT GO TO: 60 THOUSANDTHS. ANYTHING UNDER THAT IS GOOD ~ RIGHT GUYS

NOW I GO BUY A DIAL CALIPER TO MEASURE HOW FAR GONE ARE THE CYLINDER COMPARTMENTS. I FELT ALL THE WALLS AND THEY FEEL PRETTY DARN S M O O T H. BUT THAN AGAIN WHAT THE HECK DO I KNOW

I PUT THE DIAL CALIPER INSIDE ALL THE CYLINDERS AND OPENNED UP THE JAWS OF THE CALIPER AS MUCH AS I COULD TO GET A GOOD READING AND ON ALL OF THEM IT WAS: (4) FOUR INCHES WIDE.

NOW IT REALLY GETS GOOD I DON'T KNOW HOW TO READ WHAT'S GOIN' ON WITH THE BLACK and RED DIALS ON THE ROUND DIAL.

WHAT I CAN SEE IS THIS ~
THE BLACK INDICATOR IS ON: 97
THE RED INDICATOR IS ON: ONE NOTCH UP FROM THE .5

I SURE HOPE THAT HELPS YOU GUYS TO HELP ME WITH THE READING AND WHAT THE HECK THEY MEAN

I'M TAKIN' A GUESS THAT THE 4in. WIDE READING I GOT IS A GOOD INDICATION THAT EVERYTHING IS GOOD. AND THE MACHINIST HAS ENOUGH METAL TO OPEN-UP THE CYLINDERS, (GOD WILLING )
BUT THAN AGAIN GUYS I'M IN YOUR HANDS

THANK YOU ALL.
GOD BLESS YOU AND YOUR FAMILIES THIS CHRISTMAS SEASON.

SCHOONER