Measuring Backspacing. …wheels, you'll see a range of backspacing, offset and width measurements available for your vehicle. When looking at wheels, sometimes we'll have the measurements from your stock wheels, but sometimes we do not. This may lead you to wonder, How are these measurements going to change….
https://tires.tirerack.com/tires/How%20To%20Measure%20Wheel%20Backspacing
The backset is the distance from the edge of the door to the center of the 2-1/8 bore hole. We will pack your locks with a 2-3/8 or 2-3/4 latch depending on which backset you specify. Dummy sets have no latch and are surface mounted so you can install a dummy set wherever you choose on the door.
http://www.doorhardwaredesigns.com/backset.html
With a backset door knob or door lock, backset is defined as the distance from the edge of the door to the center of the opening that holds the door knob. This opening is circular in shape and usually measures 2 1/8 inches across the entire width of the circle.
http://www.ehow.com/about_5072585_definition-backset-door-knob.html
With a ruler or measuring tape, measure the distance from the lower edge of the. straight edge mounting pad To avoid interference, you may need to deflate or remove the tire from the wheel to complete. this measurement. The measurement (A in the diagram) is the amount of backspacing of the wheel.
http://www.jegs.com/images/wheelmeasureguide.pdf
The center of this hole should be located 2-3/8 or 2-3/4 back from the edge of the door (this is the backset dimension). Bore a 1 hole in the edge of the door located on the centerline of the 2-1/8 hole. The latch will fit into the 1 hole. Chisel out a 1 by 2-1/4 rectangle on the edge of the door, 1/8 deep.
http://www.doorhardwaredesigns.com/backset.html
We have 5 backsets available for Schlage and Kwikset. You can order new knobs and levers with 5 backsets in those brands, but you would not be able to use their 5 backsets with other brands. You can order replacement 5 backsets by choosing one of the links below: Schlage 5 Backset for Knob or Lever. Schlage 5 Deadbotl Latch.
http://www.directdoorhardware.com/door_latch_backset.htm
However, if you check the length of the backset on a large number of doors that are already in place, you might find that the length varies somewhat. Actually there are two different lengths that American door knobs and door knob locks are designed to accommodate. These measurements are 2 3/8 and 2 3/4 inches.
http://www.ehow.com/about_5072585_definition-backset-door-knob.html
Custom Wheel Fitments. …plate of the wheel to the back edge of the wheel, where offset measures the distance from the mounting plate of the wheel to the center of the wheel barrel. The higher the backspace, the further back into the fender well it will sit. To help you understand offset and backspacing, take a look at….
https://tires.tirerack.com/tires/How%20To%20Measure%20Wheel%20Backspacing
How to Adjust the Backset of a Deadbolt Lock When replacing a door deadbolt, it might be necessary to adjust the lock's backset. The backset is the distance between the edge... The Definition of a Back-to-back Letter of Credit Merchants who purchase goods from importers often need to get letters of credit.
http://www.ehow.com/about_5072585_definition-backset-door-knob.html
Standard backsets are either a 2 3/8 backset, or 2 3/4″ backset. The most common backset is 2 3/8″ but 2 3/4 is also quite common - usually used on exterior doors. Sometimes it's easier to measure from the edge of the door to the highest point on the bore hole.
http://www.directdoorhardware.com/door_latch_backset.htm
how to figure backset
The figure backset is opening is circular in shape and usually measures 2 1/8 inches across the entire width of the circle.