6m Non-Hydraulic Scissor Lift

I need a fully-specified, non-hydraulic scissor lift that can raise a work platform to 6 m for outdoor construction jobs. The unit must operate safely on mixed terrain—think gravel, compacted soil, or a half-finished slab—while carrying between 300 kg and 500 kg of tools and personnel... (Budget: ₹1250 - ₹2500 INR, Jobs: 3D CAD, CAD/CAM, Electrical Engineering, Engineering, Mechanical Engineering, Product Design, Prototyping, Structural Engineering)