www.pmmag.com/articles/92382-peerless-boilers-introduces-energy-slide-rule-calculator
Peerless Boilers Introduces Energy 'Slide Rule' Calculator
November 13, 2008

Two versions of the PB Heat Energy Calculators are available ― an oil version and a gas version, which measures both Natural and LP gas equipment. The calculators come equipped with easy-to-read instructions.
According to the company, a Peerless Boilers’ Energy Calculator is a great tool for contractors to demonstrate the advantages and cost savings of installing energy efficient oil and gas boilers to customers. Cost of the calculators are $6.00 each or $10/set.
For more information, visit www.PeerlessBoilers.com or email marketing@PeerlessBoilers.com.