P1 is a slide of a stained transverse section through a plant leaf. You are not expected to be familiar with this specimen. You are required to: • use the eyepiece graticule to measure the depth of the leaf and the depth of a vascular bundle at the mid-rib • use these measurements to draw a plan diagram of part of the leaf. The eyepiece graticule in the microscope can be used to measure different tissues. Select the widest part of the leaf (mid-rib) on P1, shown by Y in Fig. 2.1. [Figure 2.1]