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This part of ISO 7176 specifies a method for measuring the seating and wheel dimensions of wheelchairs.

It is applicable to wheelchairs and vehicles intended to provide indoor and outdoor mobility at speed up to 15 km/h for people with disabilities whose mass does not exceed 120 kg, including the following classifications from ISO 9999:1992:

• Electric motor-driven wheelchairs with manual steering 12 21 24
• Electric motor-driven wheelchairs with power steering 12 21 27
• Powered attendant-controlled wheelchairs 12 21 21
• Manual attendant-controlled wheelchairs 12 21 03
• Bimanual rear-wheel-driven wheelchairs 12 21 06
• Bimanual front-wheel-driven wheelchairs 12 21 09
• Bimanual lever-driven wheelchairs 12 21 12
• Single-side-driven nonpowered wheelchairs driven by one arm or one leg 12 21 15
• Foot-propelled wheelchairs 12 21 18

It does not apply to wheelchairs with a seat width of less than 212 mm.

This part of ISO 7176 does not specify nominal seating and wheel dimensions for wheelchairs.