FIRST PRINCIPLES DOMESTIC HEATING CALCULATOR

GAS SAFE REGISTER TM1
For complete installation design.
An instrument, simple and quick to use, which determines the heating requirements for all types of houses and small commercial properties (i.e. shops and small warehouses). Each section is engraved and colour filled, complete with wallet and instruction booklet.
Part No.DescriptionUnit PriceQty
17357 Metric £43.04