Powell & Lealand Model No. 1 optics: A: Plano-convex eyepiece, dia=12mm, f=24mm; B: Plano-convex field lens, dia=26mm, f=52mm; C: Objective (below).
Objective has no markings. It consists of two Plano-convex lenses (flat side facing "down"). Back lens (C2) dia=14mm, f=48mm; Front lens (C1) dia=11mm, f=40mm.
Drawtube markings extend from 1–1.5.
| A | Eyepiece |
| B | Field |
| C1 | Back objective element |
| C2 | Front objective element |
| Arrow | Aperture, 19mm |
Slot for the binocular prism when fitting the microscope for binocular vision. The prism was most likely a Wenham-type. These prisms were good only for low magnification objectives. Powell & Lealand had also a device for binocular imaging at high magnification. It consisted of a glass disc with inclined, parallel sides, and a rectangular prism. (Quarterly J Micros Sci vol. i. 1861; vol. vi. 1866).