You would use a microscope
Magnifying glass convex lenses
Hand lens
Anton Van Leeuwenhoek improved the simple microscope in 1674 with only 1 lens to examine yeast, blood, insects and other tiny objects. He was the first person to describe bacteria.
Spiders do not have compound eyes like flies. They have several pairs of simple eyes and each pair adapted for a specific task or tasks. Flies have compound eyes with thousands of lens.
convex lens
convex lens
hand lens
Magnifying glass convex lenses
convex lens
Hand lens
If you mean a hand "magnifying glass", like the one used to inspect stamps, examine diamonds, or enlarge fine print, then yes, that's a convex lens.
You would use a convex lens.
hand lens
An ideological reading of a text is an interpretation of a text through the lens of a particular ideology. For example, a feminist reading would focus on women's issue and Marxist reading would examine the work based on the idea of class struggle.
You would use a convex lens.
A magnifying lens is convex i.e. it bulges outwards. A concave lens would make objects appear smaller.
A watch repairer typically uses a jeweler's loupe, which is a small magnifying lens worn on the eye like a monocle. This allows them to closely examine small details on watch components while working on repairs.