Crossword Heaven

Answer: SLIDERULE

SLIDERULE is a crossword puzzle answer that we have spotted 23 times.

• Obsolete math aid
• Old tool for working on logs
• Old math calculating tool
• Tool once used with logs
• Calculator predecessor
• Pre-calculator calculator
• Obsolete calculator
• Obsolete math-class tool
• Calculator ancestor
• Obsolete calculating tool
• Antiquated calculator
• Calculator's ancestor?
• Oughtred"s 1620 invention
• Pocket calculator predecessor
• Old style caculator
• Old calculator
• Calculating device
• Tool for obtaining products made with logs
• Old engineering tool
• Criterion for Kelly
• Outmoded calculator
• Calculator's ancestor
• Hand-held calculator of yore