🇨🇿 UNIMETRA, spol. s r.o. PL

ČIA 2310 • Ostrava, Czech Republic • 68 calibration items

Metrology & calibration

UNIMETRA, spol. s r.o. is a calibration laboratory accredited by ČIA under number 2310 (Ostrava, Czech Republic). Its accreditation scope covers 68 calibration items in the following areas: Metrology & calibration. Calibrated items include: Engineering and electronic levels, Line gauges, Parallel gauge blocks, Tape measures. Most frequently used calibration principles: Measurement using parallel gauge blocks, Measurement on a length gauge, Measurement by a laser interferometer.

At a glance

Accreditation number: ČIA 2310
Calibration items in scope: 68
Types of calibrated items: 63
Calibration principles used: 34
City: Ostrava, Czech Republic
Valid until: 07-01-2031

Accreditation number: 2310
Accreditation body: ČIA
Address: Rohova 1506/6, 716 00 Ostrava - Radvanice
City: Ostrava, Czech Republic
Division: Dział Laboratorium wzorcujące
Valid until: 07-01-2031

What this laboratory calibrates (63)

Engineering and electronic levels — 2 calibration items
Line gauges — 2 calibration items
Parallel gauge blocks — 2 calibration items
Tape measures — 2 calibration items
Thread gauges – rings, cylindrical and conical — 2 calibration items
Adjustable gauges for ultrasonic equipment — 1 calibration item
Angle gauges — 1 calibration item
Angle standards, perpendicularity cylinders, sine rulers, prismatic blocks, templates, special gauges, special meters and fixtures, male gauges, rings, calipers, surface plates, rulers — 1 calibration item
Builder's levels — 1 calibration item
Calibration foils — 1 calibration item
Clinometers — 1 calibration item
Contact roughness measuring instruments – roughness gauges — 1 calibration item
Cylindrical gauges — 1 calibration item
Cylindrical, flat and slot gauges — 1 calibration item
Depth gauges with dial indicator — 1 calibration item
and 48 more

Calibration principles (34)

Measurement using parallel gauge blocks — 12 calibration items
Measurement on a length gauge — 11 calibration items
Measurement by a laser interferometer — 5 calibration items
Comparison on a length gauge with a setting ring — 3 calibration items
Comparison with a standard scale — 3 calibration items
Comparison with a standard thermometer in a dry block — 2 calibration items
Measurement on a 3D microscope — 2 calibration items
Measurement on a dial indicator instrument — 2 calibration items
Measurement using parallel gauge blocks from a reference plane — 2 calibration items
Comparative measurement with standard weights — 1 calibration item
Comparison with a standard hygrometer in a climatic chamber — 1 calibration item
Comparison with a standard thermometer in a climatic chamber — 1 calibration item
Comparison with a threaded wear gauge — 1 calibration item
Comparison with black body — 1 calibration item
Comparison with parallel gauge blocks on a comparator — 1 calibration item
and 19 more

Certificate information

Certificate date: 07.01.2026

Accreditation scope — calibration items (68)

CMC — lowest stated expanded measurement uncertainty (ILAC-P14, EA-4/02 M); if not stated otherwise, coverage probability approx. 95 % and values without a unit are relative to the measured value. The uncertainty of a specific calibration may be higher.

No.	Calibrated quantity / subject of calibration	Nominal range / parameters / CMC	Calibration principle	Calibration procedure
Calibration items
1	Micrometer calliper gauges	Calibration – length 0 mm to 1000 mm · CMC (9·L + 1,5) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.01
2	Pasameters	Calibration – length up to 200 mm — -5 mm to 5 mm · CMC (3,5·L + 0,7) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.01
3	Parallel gauge blocks	Calibration – length 0,5 mm to 100 mm · CMC (1,5·L + 0,15) µm CMC for the field of measured quantity: Length	Comparison with parallel gauge blocks on a comparator	PP-11.02
4	Parallel gauge blocks	Calibration – length 125 mm to 500 mm · CMC (2·L + 0,16) µm CMC for the field of measured quantity: Length	Comparison with parallel gauge blocks on a length gauge	PP-11.02
5	Slide gauges	Calibration – length 0 mm to 1000 mm · CMC (5·L + 15) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.05
6	Height gauges	Calibration – length 0 mm to 1000 mm · CMC (8·L + 0,7) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.05
7	Line gauges	Calibration – length 0 mm to 1000 mm · CMC (15·L + 20) µm 1000 mm to 10000 mm · CMC (16·L + 28) µm CMC for the field of measured quantity: Length	Comparison with a standard scale	PP-11.06
8	Line gauges	Calibration – length 0 mm to 10000 mm · CMC (10·L + 20) µm CMC for the field of measured quantity: Length	Measurement by a laser interferometer	PP-11.06
9	Rules of portable microscopes	Calibration – length 0 mm to 20 mm · CMC 4,5 µm CMC for the field of measured quantity: Length	Measurement on a 3D microscope	PP-11.06
10	Tape measures	Calibration – length 0 m to 20 m · CMC (20·L + 20) µm CMC for the field of measured quantity: Length	Measurement by a laser interferometer	PP-11.06
11	Tape measures	Calibration – length 20 m to 100 m · CMC (21·L + 30) µm CMC for the field of measured quantity: Length	Comparison with a standard scale	PP-11.06
12	Tape measures - digital	Calibration – length 0 m to 5 m · CMC (2·L + 120) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.06
13	Laser distance meters	Calibration – length 0 m to 20 m · CMC 0,4 mm CMC for the field of measured quantity: Length	Comparison with a standard scale	PP-11.06
14	Inside micrometer gauges, extension rods	Calibration – length 0 mm to 1000 mm · CMC (9·L + 1,5) µm 1000 mm to 3000 mm · CMC (9,5·L + 2) µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.09
15	Micrometric heads	Calibration – length 0 mm to 50 mm · CMC (3·L + 1,2) µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.09
16	Inside micrometers	Calibration – length 0 mm to 300 mm · CMC (6·L + 1,5) µm CMC for the field of measured quantity: Length	Measurement by setting rings	PP-11.09
17	Micrometer depth gauges	Calibration – length 0 mm to 300 mm · CMC (8·L + 2) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.09
18	Weld gauges	Calibration – length 0 mm to 100 mm · CMC 20 µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.12
19	Feeler gauges	Calibration – length 0 mm to 10 mm · CMC (20·L + 0,6) µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.13
20	Adjustable gauges for ultrasonic equipment	Calibration – length 0 mm to 250 mm · CMC (8·L + 1) µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.13
21	Wedges for joints	Calibration – length 0 mm to 30 mm · CMC 15 µm CMC for the field of measured quantity: Length	Measurement by a length sensor	PP-11.13
22	Dial indicators	Calibration – length 0 mm to 100 mm · CMC (4·L + 0,5) µm CMC for the field of measured quantity: Length	Measurement on a dial indicator instrument	PP-11.14
23	Calibration foils	Calibration – length 0 mm to 20 mm · CMC (70·L + 0,5) µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.15
24	Layer thickness measuring devices	Calibration – length 0 mm to 1,5 mm · CMC 1,3 µm CMC for the field of measured quantity: Length	Measurement with calibration sheets and layer thickness reference standards	PP-11.16
25	Cylindrical, flat and slot gauges	Calibration – length 0 mm to 300 mm · CMC (5·L + 0,7) µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.17
26	Sphere	Calibration – length 0 mm to 50 mm · CMC (5·L + 0,7) µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.17
27	Rigid inside micrometers, check tubes	Calibration – length 0 mm to 1000 mm · CMC (9·L + 1) µm 1000 mm to 3000 mm · CMC (10·L + 1,5) µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.17
28	Measuring wires	Calibration – length 0,17 mm to 6,35 mm · CMC 0,5 µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.17
29	Cylindrical gauges	Calibration – length 0 mm to 20 mm · CMC 0,5 µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.17
30	Film thickness standards	Calibration – length 0 mm to 0,5 mm · CMC (0,01·l + 2,3) µm 0,5 mm to 1,5 mm · CMC 8,5 µm CMC for the field of measured quantity: Length	Measurement by a layer thickness measuring instrument	PP-11.18
31	Thickness gauges with dial indicator	Calibration – length 0 mm to 100 mm · CMC 1,5 µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.22
32	Dial indicators with measuring arms for external measurement	Calibration – length 0 mm to 300 mm · CMC (10·L + 1,5) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.22
33	Dial indicators with measuring arms for internal measurement	Calibration – length 0 mm to 300 mm · CMC (7·L + 1) µm CMC for the field of measured quantity: Length	Measurement using setting rings and parallel gauge blocks	PP-11.22
34	Internal gauge with dial indicator	Calibration – length 0 mm to 300 mm · CMC 2 µm CMC for the field of measured quantity: Length	Measurement on a dial indicator instrument	PP-11.22
35	Depth gauges with dial indicator	Calibration – length 0 mm to 150 mm · CMC (8·L + 2) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.22
36	Length sensors	Calibration – length 0 mm to 100 mm · CMC (4·L + 0,45) µm CMC for the field of measured quantity: Length	Measurement on a length gauge	PP-11.23
37	Roller length gauges	Calibration – length 0 m to 250 m · CMC (0,003·L + 0,13) m CMC for the field of measured quantity: Length	Measurement using tape measures	PP-11.29
38	Limit and end measuring rings	Calibration – length 1 mm to 300 mm · CMC (4·L + 0,7) µm CMC for the field of measured quantity: Length	Comparison on a length gauge with a setting ring	PP-11.31
39	Snap gauges	Calibration – length 1 mm to 300 mm · CMC (4·L + 0,7) µm CMC for the field of measured quantity: Length	Comparison on a length gauge with a setting ring	PP-11.31
40	Ultrasonic thickness gauges	Calibration – length 0 mm to 200 mm · CMC 10 µm CMC for the field of measured quantity: Length	Measurement using ultrasonic gauges	PP-11.32
41	Thread gauges – male gauges, cylindrical and conical	Calibration – length 0 mm to 300 mm · CMC (5,5·L + 3) µm CMC for the field of measured quantity: Length	Measurement on a length gauge, microscope and height gauge	PP-11.33
42	Thread gauges – rings, cylindrical and conical	Calibration – length 2 mm to 16 mm · CMC (5,5·L + 3) µm CMC for the field of measured quantity: Length	Comparison with a threaded wear gauge	PP-11.34
43	Thread gauges – rings, cylindrical and conical	Calibration – length 3,5 mm to 300 mm · CMC (2·L + 3,3) µm CMC for the field of measured quantity: Length	Comparison on a length gauge with a setting ring	PP-11.34
44	Straightness / Rules	Calibration – length length up to 1,000 mm — -1 mm to 1 mm · CMC (3·L + 3,5) µm 1,000 mm to 2,000 mm — -1 mm to 1 mm · CMC (6·L + 5) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks from a reference plane	PP-11.45
45	Straightness / Check bars	Calibration – length length up to 4,000 mm — -5 mm to 5 mm · CMC 40 µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks from a reference plane	PP-11.45
46	Measuring microscopes, profile projectors	Calibration – length 0 mm to 300 mm · CMC 2 µm CMC for the field of measured quantity: Length	Measurement using a glass gauge	PP-11.48
47	Length measuring instruments	Calibration – length 0 mm to 500 mm · CMC (3·L + 0,15) µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.58
48	Templates, measuring wedges, scales, special gauges, special measuring instruments and fixtures	Calibration – length 0 mm to 160 mm · CMC (5·L + 4,5) µm CMC for the field of measured quantity: Length	Measurement on a 3D microscope	PP-11.59
49	Length gauges, measuring microscopes and profile projectors, measuring systems, coordinate measuring machines, line scales	Calibration – length 0 mm to 40 m · CMC (1·L + 0,1) µm CMC for the field of measured quantity: Length	Measurement by a laser interferometer	PP-11.50
50	Straightness / Surface rules and blocks	Calibration – length 0 mm to 15 m · CMC (1,6·M + 0,1) µm CMC for the field of measured quantity: Length	Measurement by a laser interferometer	PP-11.50
51	Flatness / Surface plates	Calibration – length 0 mm to 15 m · CMC (1,6·M + 0,1) µm CMC for the field of measured quantity: Length	Measurement by a laser interferometer	PP-11.50
52	Instruments for the calibration of parallel gauge blocks (comparators)	Calibration – length length up to 100 mm — -10 µm to 10 µm · CMC 0,04 µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks	PP-11.57
53	Perpendicularity deviation / Angles	Calibration – length length up to 630 mm — -10 mm to 10 mm · CMC (10·H + 5) µm 630 mm to 1,000 mm — -10 mm to 10 mm · CMC 35 µm 1,000 mm to 2,000 mm — -10 mm to 10 mm · CMC 75 µm CMC for the field of measured quantity: Length	Measurement using parallel gauge blocks and perpendicularity standard	PP-11.04
54	Angle standards, perpendicularity cylinders, sine rulers, prismatic blocks, templates, special gauges, special meters and fixtures, male gauges, rings, calipers, surface plates, rulers	Calibration – length 0 mm to 1500 mm · CMC (4,3·L + 1) µm CMC for the field of measured quantity: Length	Measurement on a 3D coordinate measuring machine	PP-11.52
55	Contact roughness measuring instruments – roughness gauges	Calibration – length 0,1 µm to 800 µm · CMC 3,6 % CMC for the field of measured quantity: Length	Measurement using roughness reference plates	PP-11.49
56	Roughness standards and templates	Calibration – length 0,1 µm to 800 µm · CMC 0,07 µm CMC for the field of measured quantity: Length	Contact measurement with roughness gauge	PP-11.49
57	Angle gauges	Calibration – plane angle 0° to 360° · CMC 2´ CMC for the field of measured quantity: Plane angle	Measurement using angle gauges	PP-11.07
58	Engineering and electronic levels	Calibration – plane angle -2 mm/m to 2 mm/m · CMC 4 µm/m CMC for the field of measured quantity: Plane angle	Measurement on a small angle generator	PP-11.37
59	Engineering and electronic levels	Calibration – plane angle -20 mm/m to 20 mm/m · CMC 8 µm/m CMC for the field of measured quantity: Plane angle	Measurement using sine bars and parallel gauge blocks	PP-11.37
60	Builder's levels	Calibration – plane angle length up to 2m — -2 mm/m to 2 mm/m · CMC 0,18 mm/m CMC for the field of measured quantity: Plane angle	Microscope measurements in relation to the horizontal plane	PP-11.37
61	Clinometers	Calibration – plane angle -90° to 90° · CMC 9´´ CMC for the field of measured quantity: Plane angle		PP-11.37
62	Electronic and mechanical scales with non-automatic operation	Calibration – mass Weight E2, F1 — 1 mg to 20 kg · CMC 5.10⁻⁶ + 5 µg F1, M1 — 20 kg to 100 kg · CMC 5.10⁻⁵ CMC for the field of measured quantity: Mass	Comparative measurement with standard weights	PP-11.75
63	Torque wrenches and screwdrivers	Calibration – torque 0,1 Nm to 0,5 Nm · CMC 1 % 0,5 Nm to 1500 Nm · CMC 0,5 % CMC for the field of measured quantity: Torque	Measurement by a torque sensor	PP-11.70
64	Direct indication electronic thermometers	Calibration – temperature -30 °C to 100 °C · CMC 0,10 °C 100 °C to 300 °C · CMC 0,20 °C 300 °C to 500 °C · CMC 0,40 °C 500 °C to 650 °C · CMC 0,60 °C CMC for the field of measured quantity: Temperature	Comparison with a standard thermometer in a dry block	PP-11.90
65	Direct indication electronic contact thermometers	Calibration – temperature -30 °C to 100 °C · CMC 2 °C 100 °C to 200 °C · CMC 3 °C 200 °C to 300 °C · CMC 5 °C 300 °C to 500 °C · CMC 6 °C CMC for the field of measured quantity: Temperature	Comparison with a standard thermometer in a dry block	PP-11.90
66	Thermometers for air temperature measurement, data loggers, outdoor thermometers	Calibration – temperature -10 °C to 100 °C · CMC 0,3 °C CMC for the field of measured quantity: Temperature	Comparison with a standard thermometer in a climatic chamber	PP-11.91
67	Non-contact thermometers	Calibration – temperature 35 °C to 100 °C · CMC 1,3 °C 100 °C to 300 °C · CMC 2,2 °C 300 °C to 500 °C · CMC 3,3 °C CMC for the field of measured quantity: Temperature	Comparison with black body	PP-11.92
68	Hygrometers, measuring chains for measuring relative humidity, data loggers for measuring relative humidity	Calibration – humidity 30 °C to 50 °C — 10 % RH to 30 % RH · CMC 1,5 % RH 13 °C to 33 °C — 30 % RH to 50 % RH · CMC 1,5 % RH 13 °C to 33 °C — 50 % RH to 70 % RH · CMC 2,0 % RH 13 °C to 33 °C — 70 % RH to 90 % RH · CMC 2,5 % RH CMC for the field of measured quantity: Humidity	Comparison with a standard hygrometer in a climatic chamber	PP-11.95

Reference standards (36)

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PP-11.70

PP-11.75

PP-11.90

PP-11.91

PP-11.92

PP-11.95

The same scope as data (JSON): https://labcoda.pl/api/accreditation-scopes/labs/CZ/2310