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Digital Angle Level

ASMDL360•Digital angle level
Tutorial available on autosolotools.com
User Guide
AutoSolo · ASMDL36001

Know the gauge.

The AutoSolo Digital Angle Level measures angles for leveling tasks in wheel alignment, construction, carpentry, and DIY applications.

Bubble levelDevice orientationLow battery indicatorQuick angle reference markingsBacklit displayOn / off / relative angle modeHold measurementCycle measurement modes
Overview01
Specifications02

Specifications.

  • Measurement range. 4×90° (0 to 360°)
  • Resolution. 0.05°
  • Tolerance. ±0.1° at 0° and 90°, ±0.2° at all other angles
  • Measurement units. Degrees (°), Percent (%), Millimeters per Meter (mm/m), Pitch (in/ft)
  • Display features. Backlit LCD, Hold function, 0° calibration
  • Built-in bubble vial. For manual leveling without batteries
  • Power supply. 2 AAA batteries (1.5V)

Design features

  • V-groove base for mounting on round pipes
  • Side grooves for marking reference points
  • Strong built-in magnets for secure attachment to metal surfaces
  • Operating temp. 0°C to 40°C
  • Storage temp. -10°C to 50°C
  • Dimensions. 2.68"×1.26"×2.44" (L×W×H), 68×32×62 mm
  • Weight. Approx. 3.53 oz / 100g (excluding batteries)
Specifications · Design features02
Getting started03

Getting started.

Power on/off

  • To turn on. Press the Power button once.
  • To turn off. Press and hold the Power button for 3 seconds.
  • Auto shut-off. The device powers off automatically after 3 minutes of inactivity.

Using the device · Correct measuring

LevelTilt error

Tilt error warning

When taking a measurement, ensure the device is aligned with the surface. If the tilt exceeds 45°, the screen will show an error message.

Getting started · Using the device03
Measurement units & modes04

Measurement units & modes.

By default, the screen displays the slope in degrees. Press the Mode button [M] to cycle through the available units.

  • Degrees (°). Standard angular measurement relative to a flat (horizontal) or upright (vertical) plane.
  • Percent (%). Shows the slope as a percentage (rise over run), commonly used in grading or slope applications.
  • Millimeters per meter (mm/m). Displays how many millimeters the surface rises or falls per meter, for fine leveling.
  • Pitch (in/ft). Measures slope as inches of rise per foot of run, typically used in roofing or construction framing.

The icon to the top left of the angle indicates its orientation relative to horizontal or vertical planes.

Hold function

Use the HOLD button [H] to freeze the current reading if you need to move or reposition the device. When active, the “H” icon appears on screen. Press HOLD [H] again to resume live measurements.

Measurement units & modes04
Measuring angles05

Measuring angles · Relative angle mode.

When the device is not level, it automatically displays the angle

  • To measure a relative angle, press the Power button briefly.
  • The device will enter relative mode, indicated by the “S” icon.
  • The screen will flash during zeroing. Keep the device stable for 3 seconds.
  • Press ZERO again to return to absolute angle measurement.

Replacing the batteries

1

Unscrew the rear battery cover.
2

Insert 2 AAA batteries.
3

Replace the cover securely.

When the low battery indicator appears, replace the batteries promptly.

User calibration

To recalibrate the device, follow these steps.

1

Place the device on a flat and stable surface, then turn it off.
Relative angle mode · Hold · Batteries05
User calibration06

User calibration

To recalibrate the device, follow these steps.

1

Place the device on a flat and stable surface, then turn it off.
2

While off, hold down the HOLD button [H] and press the Power button to turn it on. The display will flash “CAL” then the current angle.
3

Press HOLD [H] to begin calibration. “CAL1” appears and will start flashing when calibration is near completion. Keep the device completely still until the screen returns to angle mode.
4

Rotate the device 180° on the same surface.
5

Press HOLD [H] again. “CAL2” will appear and start flashing when calibration is near completion. Once the screen returns to angle mode, calibration is complete.

Important · Use with caution

  • Only calibrate on flat, smooth surfaces with a slope less than 5°.
  • Movement during “CAL1” or “CAL2” will result in an error.
  • This process replaces the factory settings with user calibration values.
User calibration06
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ASMDL360User Guide · v3.0 · 2026-11
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