Video coming soonFit the measuring guides to the object
Basics · Written steps
Read the steps : Fit the measuring guides to the objectHow to use Ruler
Steps, videos and tips for the tool.
Measure length, area, diameters, thread pitches and wrench sizes on the screen, or show cards, coins and SIM cards at real size.
Watch how it works.
Video coming soon
Getting started
Fit the measuring guides to the object
Tap Measure in the ruler's bar to pick a mode, lay the object on the screen and drag the pointers, circle or jaws to its edges. The magnifier and the nudge buttons help you place them exactly.
This is a still image. The how-to video has not been recorded yet.
Read the stepsBasics
Video coming soonVideo coming soonLock the reading and measure beyond the screen
Basics · Written steps
Read the steps : Lock the reading and measure beyond the screenVideo coming soonCalibrate against a known size
Basics · Written steps
Read the steps : Calibrate against a known sizeVideo coming soonSave, copy or share the measurement
Basics · Written steps
Read the steps : Save, copy or share the measurementVideo coming soonChoose a ruler look
Basics · Written steps
Read the steps : Choose a ruler lookStep by step.
Get started
Choose a ruler look
Pick the ruler's look, such as Tape or Steel, from More options › Theme.
Measure
Lock the reading and measure beyond the screen
Lock the reading before you lift the object. Continue past the screen for longer objects, split a length into equal parts, or pick a drawing scale to read plans. Drag the reading out of the way, and tap the arrow beside the value to fold its tools away.
Save, copy or share the measurement
Save results to Records, or copy and share them.
Fit the measuring guides to the object
Tap Measure in the ruler's bar to pick a mode, lay the object on the screen and drag the pointers, circle or jaws to its edges. The magnifier and the nudge buttons help you place them exactly.
Calibrate
Calibrate against a known size
Calibrate once from More options with a bank card, a coin or a real ruler.
Guided tour
Try these steps in the app. All tour instructions stay readable here.
Fit the measuring guides to the object
Tap Measure in the ruler's bar to pick a mode, lay the object on the screen and drag the pointers, circle or jaws to its edges. The magnifier and the nudge buttons help you place them exactly.
Lock the reading and measure beyond the screen
Lock the reading before you lift the object. Continue past the screen for longer objects, split a length into equal parts, or pick a drawing scale to read plans. Drag the reading out of the way, and tap the arrow beside the value to fold its tools away.
Calibrate, save and share the result
Calibrate once from More options with a bank card, a coin or a real ruler. Save results to Records, or copy and share them. Pick the ruler's look, such as Tape or Steel, from More options › Theme.
Get the tool.
Find Ruler in these apps.
Tips.
On-screen measurements are only as accurate as the calibration. Check it now and then against a known reference, such as a bank card, and calibrate again if it is off.