Related Clues:

• Old calculating device
• Calculator's ancestor
• Get worse code in old computer
• Transparency shown by government that facilitates calculations
• Mechanical calculating device
• Logs on here, making slip with control
• Slip, having to control old calculator
• Transparency by government that calculating person used to manipulate
• Regulation for piece of playground equipment? Engineers no longer find it useful
• Pre-calculator calculator
• Tool for obtaining products made with logs
• Old engineering tool
• Outmoded calculator
• Hand-held calculator of yore
• One can work things out using this playground equipment control