By hand

Technical drawing #1 (year 2018)

Technical drawing #2 (year 2018)

Technical drawing #3 (year 2018)

Technical drawing #4 (year 2018)

Technical drawing #5 (year 2018)

Technical drawing #6 (year 2018)

Technical drawing #7 (year 2018)

Technical drawing #8 (year 2018)

Technical drawing #9 (year 2018)