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3d wireframe of building. sketch design.Vector
Technical schematic diagram of digital electronic device.
Vector drawing electrical circuit with 
led, capacitor, resistor,
indicator, logic element, integrated circuit, switch,
transformer, diode.
Schematic diagram of electronic device. Vector drawing electrical circuit with 
logic gate, operational amplifier, 
microcontroller, integrated circuit, 
resistor, capacitor, diode on paper sheet.
In front of the electrical circuit diagram lies a stripped multiconductor cable with visible, color-coded wires ready to establish new connections.
Engineering mechanical pencil drawing of steel devices
(reducer, gearbox)
with dimension lines. Industrial 
cad scheme on white paper sheet. Technology background.
Machine template.
Vector engineering drawing of a steel mechanical parts with through holes.
Industrial cad scheme on white paper sheets. Technology background.

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