The diagram below illustrates a farm implement. Use it to answer this question.

The illustrated farm implement i used for

The diagram above illustrates a farm implement. Use it to answer this question.

The part of the illustrated farm implement that enables it to roll over obstacles is labelled

The diagram below illustrates a farm implement. Use it to answer this question.

The function of the part labelled II is to 

A combine harvester can be used simultaneously to harvest

Ranging poles used in farm surveying have characteristic