A Lonetti test measure is a handheld volumetric reference can used to verify the accuracy of fuel dispensers, retail pumps, and small flow meters in the field. A measured volume of liquid is drawn from the meter into the test measure — if the meter reading matches the measure's certified volume, the meter is accurate.
Test measures are the inspector's standard tool. Lonetti's are in service at petroleum retailers, weights & measures inspectors, refueling operations, and metrology institutes across 47 countries — built in 304 stainless steel, with handle and pour spout for one-person operation.
Every unit is built to specification: capacity from 1 liter to 50 liters, in liters or US gallons, with optional bottom drain, top funnel, or pressurized configuration. Standard cans ship in 4–8 weeks.
6 properties that define a Lonetti calibration cans.
Specification points worth comparing against any other supplier — accuracy class, material grade, standards compliance, and configurability.
±0.025% accuracy class
OIML R120 class 0.05 / 0.025 accuracy — suitable for retail and inspector use.
1L to 50L capacity
Standard sizes: 1, 2, 5, 10, 20, 25, 50 liters. Imperial units (gallons) available.
Single-piece 304 SS construction
Welded stainless body, hand-polished, traceable to material certificate.
Graduated sight gauge
Glass sight column with engraved meniscus scale — typically ±5mL resolution on 20L.
Reinforced handle & spout
Designed for one-person field use. Optional second handle for capacities above 20L.
INTI certificate included
Each unit ships with an INTI calibration certificate traceable to OIML R120 standards.
Built to your spec, certified to ours.
These are the parameters our engineering team needs to start a quote. For a full technical datasheet, request the PDF.
Download full datasheetWhere Lonetti calibration cans go to work.
The same engineering platform serves several distinct use cases. Configuration varies; accuracy class doesn't.
Retail dispenser verification
Verifying fuel pumps at gas stations under weights & measures audit.
Field meter inspection
Spot-checking turbine and PD meters during routine compliance visits.
Refueling operations
Aviation, marine, and bulk-fuel delivery accuracy verification.
Laboratory reference
Bench-scale calibration of smaller flow instruments in calibration labs.
Workshop, field, and deployment.
Common questions.
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