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The CALCULATED INDUSTRIES 4095 is a dedicated pipe trades calculator built for plumbers, pipefitters, and mechanical contractors who need fast, accurate pipe layout math on the job. With 58 built-in functions and 12-digit internal accuracy, it handles the calculations most general calculators cannot: cutting, welding, and placing pipe in both standard and metric units. It runs on two included alkaline A76/LR44 batteries and operates as a full standard calculator when pipe-specific functions are not needed. The 4095 is compact enough for a tool belt or job box at 5.63 inches long, 3 inches wide, and 0.63 inches thick.
This calculator is intended for residential and commercial piping work, including plumbing rough-in, mechanical piping, and industrial pipe installation. It supports building, plumbing, and metric unit conversions, making it useful across both domestic and international project specifications. Pipefitters and plumbers working with mixed measurement systems will find the unit conversion functions reduce layout errors and save time. It is also suitable for estimators and project managers who verify pipe quantity takeoffs in the field.
Designed for use in plumbing, pipefitting, and mechanical piping trades; compatible with standard and metric pipe measurement systems used in residential and commercial construction.
No installation is required. Insert the two included A76/LR44 alkaline batteries before first use. Handle the unit away from standing water, cutting fluids, and direct heat sources common on mechanical job sites. Battery replacement requires a small flathead screwdriver on most similar calculator housings — consult the manufacturer documentation for the correct procedure on this model.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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