the second part of the discussion is about scale structures. The Importance of Balanced Scales The first rule for all questionnaire-design work is, Do not make your respondents work harder than ...

Mechanical triple beam balance with 610g capacity and 0.1g readability (also called accuracy) Three sliding weights and notched and tiered beams help ensure accurate readings and repeatable ...

You'll be shown two examples where the scales are perfectly balanced by combining spheres of different colours. Using that information, see if you can work out which other set of scales is also ...