2-foot folding slide rule (14h 39min, nov 21, 2018 y – jan 1, 1677)
Description:
Henry Coggeshall invented a 2-foot folding slide rule for lumber measure, called the Coggeshall slide rule.Added to timeline:
Date:
14h 39min, nov 21, 2018 y
jan 1, 1677
~ 342 years