Here is a gallery of some of the diagrams I worked on for Wikimedia. H Padleckas

Chemical Engineering

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  U-tube heat exchanger
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  Straight-tube heat exchanger 1-pass
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  Straight-tube heat exchanger 2-pass
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  3-way valve positions
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  Metering pump head

Chemistry

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  Conically-tapered ground glass joints
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  Ground glass ball and socket joints
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  Glass O-ring joints with elastomer O-ring in between
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  Simple chem distillation
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  Distillation by Alembic
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  Round-bottom flasks
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  Polystyrene formation
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  1,3-Butadiene Polymerization

Urban planning and Real estate

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  City block diagram
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  Angle parking lot diagram
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  Street Intersection diagram

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 Image:Lot map.PNG|Real estate lot map

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