Getting and knowing the exact measurements for a fireplace door is extremely important when one goes to order. And to ensure that the numbers are precise, one must be sure to understand how to read a tape measure. We'll review the basics here.
We recommend steel tapes only. The best ones have a locking mechanism that helps extend the tape slightly longer than the item to be measured. This makes the extended tape easier to handle.
The tape measure is marked with a series of marks known as a graduated scale.
The images above show the whole inch marks (3 & 4 inch) on the steel tape.
The tape has marks that divide each inch. These marks will be the longest line on the tape measure.
The first major division of an inch is the half-inch mark.
It Is the longest mark within an inch and is the halfway point between each inch mark.
There is one 1/2" mark between each whole inch mark on the ruler.
The second major division of an inch is the quarter inch mark.
It Is the second longest mark within an inch and is equidistant between each 1/2"inch mark.
It divides the inch into 4 parts or quarters.
The third major division of an inch is the eighth (1/8") inch mark.
It Is the third-longest mark within an inch and is equidistant between each 1/4"inch mark.
It divides the inch into 8 parts.
The smallest division of an inch is the sixteenth (1/16") mark. It divides the inch into 16 parts.
To record your measurement call out the smallest whole inch and the specific fraction. The image above would be 3 1/16".