the instrument that the used was an intelligent brain
A Pencil
Depends what you mean by instrument but I guess the sun, mmon and stars are pretty good indicators to use.
All you need is a scale. you should use a scale that measures in grams.
You would use a balance or a scale to find the mass of the block in the laboratory. These instruments provide accurate measurements of mass by comparing the weight of the object with a set of calibrated weights.
the sizes become distorted because of the round curves from a globe. if you use a flat map, same rules apply.
A measuring flask.
A measuring cylinder
A accurate scale in KILOGRAMS at exactly earth's gravity . kilograms are a measure of mass.POUNDS ARE NOT.
A Pencil
pencil
Some instruments you can use to find the mass of an object are:Mass scaleTriple beam balance
A Pencil
Use a temperature gun.
Basically one is provided with legs and you can use these to travel round the Earth, apart from the stretches of water where you have to get a boat and row.
Cartographers use a projection method to show the round Earth on a flat surface. Different types of map projections, such as Mercator or Robinson, are used to represent the Earth's curved surface in two dimensions while minimizing distortion of shape, area, distance, or direction.
that the earth was round and big and it contained a force called the almighty gravity. How amazing LOL :)
All you need is a scale. you should use a scale that measures in grams.