What is the Black Diamond used for on a tape measure?
Thereof, why does a tape measure have a diamond at 19 3 16?
The black diamonds which appear every 19 3/16” on metal tape measures are for spacing I-beam “timbers”. Those diamond marks are there for builders who want to take advantage of the great strength of engineered I-beams by using fewer floor joists, with no loss of floor support, where codes allow.
Fraction | Decimal | Millimeters |
---|---|---|
3⁄16” | 0.1875 | 4.7625 |
1⁄4” | 0.25 | 6.35 |
5⁄16” | 0.3125 | 7.9375 |
3⁄8” | 0.375 | 9.525 |
In this manner, what is M on a measuring tape?
Metric tape measures Numbers shown represent meters, decimeters (sometimes shown in red-see example picture), and centimeters. Metric is based on 'tens'. There are 10 decimeters in a meter, 10 centimeters in a decimeter, and 10 millimeters in a centimeter.
The adjustable end The metal tip at the end of your tape measure is a little bit loose for a reason. The first inch of the tape is short by 1/16 of an inch. This isn't an error: it's meant to provide you with accurate readings whether you're measuring the inside or outside edge of a surface.