Key T

ISO 9999 codes:

• 24 18 Assistive products to replace arm function, hand function, finger function, or combonation of these functions
• 24 Assistive products for controlling carrying moving and handling objects and devices

Source:
source - - - Full text at
,
How to Make It Cheap Volume 1 - - - Full text at https://archive.org/details/cheap-manual-vol-1