measuring tool
- rulerOne who governs
- caliperTool measuring thickness or diameter
- gaugeStandard of measurement
- scaleMeasure of relative size
- tapeAdhesive strip on roll
compass · level · protractor · micrometer · yardstick · thermometer · precision · markings · inches · metric · dial · needle · calibrate · accuracy · meter · measuring cup · square · plumb
precision vs. estimation
measuring toolguesswork
Conclusions drawn without proof
eyeballing · wild guess · estimation · intuition · ballpark figure