The width of a pin would typically be measured in millimeters (mm).
Metres, to measure its length or width, square metres to measure its area.
The metric unit used for measuring the width of a fingernail is usually millimeters (mm).
To measure a sharpener in the metric system, you would typically use centimeters (cm) for its length, width, and height. If you need to measure smaller dimensions, millimeters (mm) might be more appropriate. For weight, grams (g) would be used.
Please specify what you want to measure about the bucket, for example its height, width, circumference, volume, color, albedo, etc.
A metric gram would be precise enough of a measurement for a stamp.
cm
It would be millimetres.
Kilometres
centimetre
The width of a pin would typically be measured in millimeters (mm).
millimetres.
Metres, to measure its length or width, square metres to measure its area.
if you are after a metric measurement than millimetres^2
The metric unit used for measuring the width of a fingernail is usually millimeters (mm).
I would go with millimetres
The metric unit of the meter would be the appropriate measure of the area of classroom. Calculating area involves multiplying the length (in meters) of the classroom's length and width. Area of the classroom would be in square (^2) meters.