Mechanical Ability and Information Scale by Sanjay Vohra (English)

There are five sub-test — I. Position in space, II. Form perception and constancy, III. Figure ground perception, IV. Spatial relation and awareness, V. Visual closure and Total items 35. Age range 7 to 10 years for class III to V.

It provides an objective measure of one important aspect of sales aptitude namely knowledge and understanding of basic principles of selling.