Video coming soonAttach the phone and set zero
Basics · Written steps
Read the steps : Attach the phone and set zeroHow to use Rotation angle
Steps, videos and tips for the tool.
Measure how far something turns, such as a valve, a wheel, a bolt, a door or a lid, past full turns and either way.
Watch how it works.
Video coming soon
Getting started
Attach the phone and set zero
Fix or hold the phone on the part that turns: every spot on it turns by the same angle. The turn starts at zero when the tool opens; tap the round Zero here button to start again from where the part is now.
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Read the stepsBasics
Video coming soonVideo coming soonCount turns and hold the reading
Basics · Written steps
Read the steps : Count turns and hold the readingVideo coming soonChoose a layout or set a target
Basics · Written steps
Read the steps : Choose a layout or set a targetStep by step.
Get started
Choose a layout or set a target
Use ⋮ › Screen layout to switch screens: Dial (a ring that fills in), Picture (pick what's turning and watch it turn) and Target (set an angle such as 90° and get a beep or a vibration when the turn reaches it). In Target, choose Target › Custom value… to enter an angle from 1° to 3600°.
Measure
Count turns and hold the reading
Turn the part. The reading counts on past 360° with full turns and says which way it went. Hold keeps the reading while the part moves on, and Release lets it follow again.
Attach the phone and set zero
Fix or hold the phone on the part that turns: every spot on it turns by the same angle. The turn starts at zero when the tool opens; tap the round Zero here button to start again from where the part is now.
Guided tour
Try these steps in the app. All tour instructions stay readable here.
Attach the phone and set zero
Fix or hold the phone on the part that turns: every spot on it turns by the same angle. The turn starts at zero when the tool opens; tap the round Zero here button to start again from where the part is now.
Count turns and hold the reading
Turn the part. The reading counts on past 360° with full turns and says which way it went. Hold keeps the reading while the part moves on, and Release lets it follow again.
Choose a layout or set a target
Use ⋮ › Screen layout to switch screens: Dial (a ring that fills in), Picture (pick what's turning and watch it turn) and Target (set an angle such as 90° and get a beep or a vibration when the turn reaches it). In Target, choose Target › Custom value… to enter an angle from 1° to 3600°.
Get the tool.
Find Rotation angle in these apps.
Tips.
Wobble shows how far the phone moved off the axis: keep it small for a clean reading. The reading drifts a little over minutes, so zero again for long jobs.