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Camber & Caster Gauge

ASCGAL•Bubble Level
User Guide

00 · About this guide

Contents.

  1. 01What you will need · Zeroing the gauge01
  2. 02Measuring camber · Measuring caster02
Setup · Zeroing

01 · Setup

What you will need.

Measure camber and caster using the ASCGAL mechanical alignment gauge. Use it with one of AutoSolo’s wheel clamps and turn plate sets.

  • 1. ASCGAL Camber & Caster Gauge
  • 2. Wheel clamp (ASWG001/ASWG001TC/ASWL470) or flat surface on wheel
  • 3. True vertical reference plane or level devices (ASMDL360/ASMLD1)
  • 4. (For caster) Alignment turn plates (ASWG004/ASWG008)
ASCGALASWG001TCASWG001ASWL470ASMDL360ASMLD1ASWG004ASWG008

Zeroing the gauge (required)

Establishes a true reference point before taking any measurements.

Recommended method

Use a digital angle finder to create a true vertical reference plane.

01

Place a digital angle finder on its side to create a vertical reference plane and confirm it reads 90.0°.
02

Attach the ASCGAL to the digital angle finder using the gauge’s magnetic base.
03

Place a magnetic bubble level on top of the ASCGAL to ensure the gauge body is aligned to the digital angle finder’s vertical plane.
04

Confirm the rotational level on the ASCGAL is centered (this ensures the gauge is not twisted).
05

Turn the thumb knob under the ASCGAL until the camber level centers at 0°.

!Alternative method (use with caution)

  • You may also zero the gauge using a vertical surface (beam, post, column, etc.), only if that surface is confirmed to be a true 90° vertical. If not, use the digital angle finder method above.
ASCGAL · User Guide01
Camber · Caster

02 · Measure

Measuring camber and caster.

CamberCenter
01

Attach the gauge to the wheel with an AutoSolo wheel clamp, tire clamp, or 6-point clamp. You can also attach it to the brake rotor, hub face, or a vertical rod.
02

Ensure the gauge is level.
03

Read the camber angle directly from the gauge. A caster change can move camber, so read camber again after you adjust caster.
Tip: Most modern vehicles use slight negative camber (0.5° to 1°) for handling and tire wear.

Measuring caster (with turn plates)

01

Drive the front wheels onto AutoSolo turn plates (ASWG004 or ASWG008).
02

Keep wheels straight ahead and level the gauge.
03

Turn the wheel 20° OUT. Hold the brake pedal down the entire time, through the final reading.
04

Level the gauge and zero the camber level using the thumb knob.
05

Turn the wheel 40° total to 20° IN.
06

Level the gauge again.
07

Read the value on the camber level. This is the swing, not caster yet.
08

Multiply the swing by 1.46 to get true caster. (e.g. 2.9° × 1.46 = 4.2°)

!Important notes

  • Always center and use the same mounting position for consistent results.
  • Set caster first, then camber, then toe last. A camber change moves toe, because the knuckle tilts while the tie rod stays the same length. This gauge does not read toe, so measure toe with toe plates after your last camber change.
  • Re-check all measurements after every adjustment.
  • The camber level shows the tilt swing across the sweep, not caster. True caster = swing × 1.46 (the gauge reads about 0.68 × caster during a 40° sweep, so it reads low until you convert).
ZeroLevel20° Out
Turn knob to zero
LevelCaster swing
ASCGAL · User Guide02

Use the free AutoSolo Caster Calculator at autosolotools.com/pages/caster-calculator. Enter your sweep reading and it returns true caster.

Caster CalculatorEnter your sweep reading and it returns true caster.autosolotools.com/pages/caster-calculator
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ASCGALUser Guide · v4.0 · 2026-11
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