depends on the type of measure
With a tape measure or a yard stick.
With a "ruler" or "tape measure" calibrated in imperial units
A ruler or a tape measurer
A caliper is a tool used to measure distances (small ones typically). It is not a unit of measure. Your question is like asking how many feet are in tape measure or how many pounds are in a scale.
depends on the type of measure
A tape measure
It is unlikely that a tape measure will extend that long, but 104.166... feet.
A tape measure
A tape measure.
With a tape measure or a yard stick.
With a "ruler" or "tape measure" calibrated in imperial units
Magnetic tape is measured in feet or metres.
A ruler or a tape measurer
A caliper is a tool used to measure distances (small ones typically). It is not a unit of measure. Your question is like asking how many feet are in tape measure or how many pounds are in a scale.
A tape measure has a feet, inches and CM measurement.
some tape measures roll out 100 feet -- multiply that by 12 some roll out only 25 feet-- multiply that by 12 and you can add the body of the measuring case for more inches.