Microscope, etc. :P
Early geographers used direct observation and modern geographers collect data using indirect observation
Logic, observation and mathematics. Logic for figuring things out, observation for noticing things, math for getting exact numbers.
they used nature around them
Observation
Whales were killed with a special kind of spear called a harpoon. They were cut up with tools called flensing knives.
You think probable to an experimental work.
Tools for observation include binoculars, magnifying glasses, telescopes, microscopes, cameras, and notebooks. These tools help individuals observe and document details in nature, astronomical bodies, microscopic specimens, and other subjects of interest. Each tool serves a specific purpose and can enhance the observation experience.
This is a matter of language. Instruments are a type of tool, used for making observation.
limestone and granite were the main materials used they also used special tools to carve
It is made with metals and special tools that are used for that type of building.
Tenon cutters are used to fabricate a special type of furniture with a rustic style. In this context, a tenon cutter is used to create the tools for make the special furniture.
mitochondria