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This mechanical aptitude test is ideal for the recruitment and selection of technical and trade personnel.

The ACER Mechanical Reasoning Test is a test of mechanical reasoning ability. This ability can be broadly defined as the ability to perceive and understand relationships between components within a mechanism.

In order to successfully solve problems in technical trades, an understanding of the following is important:

  • basic principles of physics in general, and mechanics in particular
  • the ability to visualize movements of objects through space (three dimensional spatial ability)
  • an understanding of the cause-effect relationships between mechanical components

Specific item content is wide ranging and includes:

  • Wheels
  • Gears
  • Clamps
  • Levers
  • Sliding rods
  • Shafts
  • Pulleys
  • Weights
  • Springs
  • Conveyor belts
  • Fixed pivots
  • Non-fixed pivots

Performance on the ACER Mechanical Reasoning Test is intended to be as independent as possible of mechanical knowledge and industry specific information. For this reason, diagrams used in the test show idiosyncratic mechanisms, rather than real-life mechanisms, with which some of the candidates may familiar with. For similar reasons, the use of technical terms within the test has been kept to a minimum.

Performance on the test is intended to be independent of reading ability: the amount of written text within the test has been kept to a minimum.

Uses of a mechanical aptitude test

Employee Selection

The main uses of the ACER Mechanical Reasoning Test is for the selection of technical, trades personnel, and apprentices.

The test can be used as part of a broader battery of tests to assess people’s aptitude for designing, developing, building, repairing or servicing machinery.  Many organizations use this mechanical aptitude test in combination with the WorkSafe Predictor and Work Personality Index.

How to Get Started With the Acer Mechanical Reasoning Test

The ACER Mechanical Reasoning Test is available in English, contains 32 items and takes approximately 20 minutes to complete online (


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Online Reports

Acer mechanical reasoning assessment mechanical aptitude test REPORT
This mechanical aptitude test report provides the candidate’s total score, percentile score, and stanine.

View sample report





Acer mechanical reasoning assessment mechanical aptitude test

ACER Mechanical Reasoning Test – Sample Questions

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