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The purpose of the customer measurements is to obtain rudimentary measurements to decrease the frequency of false deliveries. There are many websites available for instruction on how to obtain proper measurements. Please note that these measurements are not intended to guarantee appropriate assessment or fit. The person should be seated on a firm surface with feet flat. Provide body measurements, not chair measurements.
Measurement A: Seat Surface to Top of Head
Measure from seat surface (where buttocks contact the seat surface) to top of head. This measurement is especially useful for tilt systems, recliners, and those with headrests or high backs.
Measurement B: Seat Surface to Top of Shoulder
Measure from seat surface (where buttocks contact the seat surface) to top of shoulder. This measurement is especially useful for wheelchairs with high backs.
Measurement G: Behind Knee to Back of Hips
Measure from seat back (where buttocks contact the seat back) to just back of knees when knees are bent at 90 degrees and subtract about 2 inches.
Measurement H: Heel to Back of Knee
Measure from floor (where bottom of heel contacts floor) to back of the knee when knees are bent at 90 degrees. If the person intends to propel with his feet, you want to be sure that the wheelchair seat is close enough to the floor to work. Hemi chairs are closer to the floor than standard chairs. You can also change tires on some wheelchairs to get closer to the ground.
Measurement M: Lap Width
Measure the hips at the fullest part. You can add up to 2 inches to the number depending on the amount of room the individual wants. If you were to place two books on either side of the hips, you would measure straight between the two books instead of curving up and over the lap like a seatbelt would.