Compass - Drift protractor
Object detail
Accession number
2007.67
Description
"Carroll" drift protractor. Clear (yellowing) plastic sheet with black printing showing distance calculations in a tapering triangular formation. Plastic is slightly curved from the centre.
Marks
"CARROLL" DRIFT PROTRACTOR PATENT APPLIED FOR Printed
LEFT / + / DOUBLE / THE ERROR / AND ADD / TO COMPASS Printed
RIGHT / - / DOUBLE / THE ERROR / AND SUBTRACT / FROM COMPASS Printed
LEFT / + / DOUBLE / THE ERROR / AND ADD / TO COMPASS Printed
RIGHT / - / DOUBLE / THE ERROR / AND SUBTRACT / FROM COMPASS Printed
Media/Materials
Credit Line
Compass - Drift protractor, 2007.67. The Museum of Transport and Technology (MOTAT).
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