List two ways of recording or measuring absolute time

Stop watch

Stop clock

Explanation:

Absolute time is time measured in definite periods such as minutes, days, and years. It can be measured uising stop watch or stop clock

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.