Calculated Industries ConcreteCalc Pro 4225 Pocket Reference Manual page 46

FCC Class B
This equipment has been certified to comply
with the limits for a Class B computing device,
pursuant to Subpart J of Part 15 of FCC rules.
Looking For New Ideas
Calculated Industries, a leading manufacturer of
special-function calculators and digital measuring
instruments, is always looking for new product
ideas in these areas. If you have an idea, or a
suggestion for improving this productor User's
Guide, please submit your comments online at
www.calculated.com under "ContactUs", "Product
Idea Submittal Agreement". Thank you.