Tool List - Tape Measure (Steel Tape)

The tape measure, sometimes called a "push-pull" rule, is usually 6', to 35' in length with a concave blade which allows the tape to remain rigid when extended. It can be curved to fit over and measure the length of a curved surface. The models with square shaped cases are commonly used by carpenters since they allow its use for inside or butt-end measurement when the size of the case is known. Some models also allow the tape to be locked at a given distance and will recoil automatically when released.
 

The 100' steel tape or nylon tape is used by the carpenter for making long linear measurements and for layout work. The end of the tape may have either a standard ring or a hook-type ring. The hook-type ring permits the carpenter to make measurements without assistance.

Most tape measures have lines or inch marks that go across the entire face of the blade. The scale between inch marks is divided into 1/16" increments. There are four different sizes of lines between the inch marks. The longest line represents 1/2", the second longest 1/4", then 1/8" and finally 1/16". The value of any line on the scale can be described in sixteenths of an inch, but it is customary to give the value of the line with its lowest common denominator.

Most tape measures share the following markings:

	Tapes are usually clearly marked every 12" with a black arrow and a number denoting the length in feet at that point on the tape.
	There will normally be some sort of easily discernible highlight located every 16" on the face of the tape. In most cases the number denoting the length in inches will have a red, rectangular background. These marks help the user mark for 16" on center (OC) when framing walls, floors and rafters.
	Many tape measures also have a small black diamond every 19.2". The diamond is an alternative OC spacing for framing materials. The diamond OC spacing matches 16" OC spacing every 8' so it is compatible with most sheet goods (plywood, paneling, etc.). The benefit of using the diamond spacing is that you save one joist or stud every 8'. Always check with your local building authority before using an alternate spacing.

Tips

	The tip of the tape is riveted in place and slides slightly; the length of the slide is the same as the thickness of the tip, to allow the user to make accurate measurements. With a sliding tip you get the same measurement hooking the end of the tape over a piece of lumber or butting the tip into a corner.
	Most tape measures have a slight curve in the tape to add rigidity to the blade. To get more accurate measurements, roll the tape so the side from which you are reading is in direct contact with the material being measured.
	Making accurate marks is as important as taking accurate readings. To ensure that your markings are correct, make a "V" (crow's foot) on the material being marked. Draw the "V" so its point is centered where you want the mark. This marking method reduces the chance of reading on one side of a single mark.
	Keep the tape dry and free of grit. If you are using the tape in a wet or sandy environment, wipe the blade with a dry towel or rag as it retracts into the case. It is also a good idea to apply a light coat of paste wax to the tape occasionally. The wax inhibits rust and helps keep the blade moving freely.
	Some carpenters put round peeland-stick plastic-laminate scratch pads (sold by some lumber yards) on their tape measures so they can conveniently write down measurements. Others write them on paper or scrap materials. Me? I simply flip my blade over and write them on the back. When I no longer need them, I rub them off with a finger. —Jim Fowler Carpenters Local 183 in East Peoria, Illinois