Underwood 3 and 4 Bank* Standard Portable Ribbon Spool Thumb Screws F*S no google It is in excellent condition

It is in excellent condition

Rig this up with a 6v power supply

palm tree frost protection etc)

This was somehow separated when I sold my windsurfing gear 20 years ago

the film is placed onto sprockets with snap guides

Underwood 3 and 4 Bank* Standard Portable Ribbon Spool Thumb Screws F*S no google It is in excellent conditionThis sale is for two (2) brand new replacement thumbscrews to secure the ribbon spools on your Underwood 3 and 4 bank typewriters, they are necessary to secure the ribbons on their spindles otherwise when you carry the typewriters the ribbons fall out in the case. These thumbscrews will fit both the Underwood Standard Portable 3 and 4 Bank typewriters, they have a mat black finish and nicely complement the black ribbon spools and your Underwood's