1. For those of you who thought slide rules were dead, think again. This slide rule was copyrighted in 2006.
2. As with many of Mear's slide rules, a summary of instructions is given on the face of the rule.
3. Side 1 is used for the calculation of heating requirements and radiator sizes for a single room in a dwelling. Side 2 is for the calculation of pipe work and pump characteristics.
4. If you want to be the proud owner of the newest slide rules on the market go to:
