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Laboratory of Length

There are 7 staffs working at laboratory, including doctor (Dr.), master (M.Sc), engineers and technical
- Deputy Head of Lab: Dr. Ngo Ngoc Anh (email : anhnn@vmi.gov.vn)
- Office lab. address: Room 107 - building D, No 8 Hoang Quoc Viet, Cau Giay dist., Ha Noi
- Tel: (+844) 3836 1129    |    Fax: (+844) 3756 4260
- Email of lab.: dodai@vmi.gov.vn

List of CMCs(Calibration and Measurement Capabilities)

1. Laser radiations. Stabilized He-Ne laser: vacuum wavelength, 633 nm
2. End standards. Gauge blocks: central length L, steel, 0.5 mm to 100 mm
3. End standards. Gauge blocks: central length L, tungsten carbide, 0.5 mm to 100 mm
4. End standards. Gauge blocks: central length L, ceramic, 0.5 mm to 100 mm
5. Line standards. Precision line scale: line spacing L, steel, 0.01 mm to 1000 mm
6. Line standards. Precision line scale: line spacing L, glass, 0.01 mm to 1000 mm
7. Diameter standard. External cylinder (plug): diameter L, 1 mm to 200 mm

More visit to link (BIPM):
http://kcdb.bipm.org/appendixC/country_list_search.asp?page=1&pge=1&CountSelected=VN&type=L 

Measurement and Calibration Capabilities

No Measured quantities/ calibrated equipment
Range of measurement
Calibration method
Calibration and Measurement capability
1 Laser Radiations Stabilized He-Ne laser in vacuum wavelength Wavelength: λ = 633nm
Frequency: 474 THz
V01.M-50
5x10-11
2 End Standards Range: (0,5 ~ 100) mm
V01.M-52
Q[28, 0.30L] nm
[L] : mm
3 End Standards Range: (0,5 ~ 100) mm (Steel gauge block)
V01.M-06
Q[64, 1.50L] nm
[L] : mm
(Tungsten carbide gauge blocks) Q[62, 1.20L] nm
[L] : mm
(Ceramic gauge blocks) Q[62, 1.50L] nm
[L] : mm
4 Line Scale Standards Range: (0,01 ~ 1000) mm
Resolution ≥ 0,01mm
(Steel Line scale)
V01.M-32
[0.6 + 1.80L] μm
[L] : mm
(Glass Line scale) [0.6 + 1.5L] μm
[L] : mm
5 External cylindrical diameter standards Range: (1 ~ 200)mm
V01.M-41
ĐLVN 148:2004
[0.38 + 1.80L] μm
[L] : mm
6 Internal cylindrical diameter standards Range: (5 ~ 300)mm
V01.M-40.10
ĐLVN 149:2004
(0.5 +1.2 L) μm
[L]: m
7 Angle gauge blocks Range: 00 ~ 3600
V01.M-01.10
5"
  8 Dial Indicator Range: (0 ~ 50)mm Resolution: 0.01 mm
V01.M-02.10
ĐLVN 75 : 2001
(5+6L) μm
[L]: m
Resolution: 0.002 mm (2+6L) μm
[L]: m
Resolution: 0.001 mm (1+6L) μm
[L]: m
9 Micrometer Resolution ≥ 1μm
Range < 1m
V01.M - 03.10
ĐLVN 104:2002
(1+6L) μm
[L]: m
10 Caliper Resolution ≥ 0,01mm
Range < 2 m
V01.M-04.10
ĐLVN 119:2003
(5 + 8L) μm
[L]: m
11 Autocollimator Resolution ≥ 0,2"
V01.M–07.10
0,5"
12 Precision level Resolution ≥ 0,01 mm/m
V01.M–11.10
ĐLVN 120:2003
5 μm/1m
13 Precision surface plate Range < (3x3)m
V01.M-19.10
( 1 + 1.2L ) mm
[L]: m
14 Profile projector Range: : (0 ~ 500)mm
ĐLVN 147:2004
0.06 %
15 1-axis measuring machine Range: (0 ~ 100) mm
Resolution ≥ 0,5μm
V01.M-21.10
ĐLVN 168: 2005
(1+2L)μm
[L]: m
16 2-axis measuring machine Range: (0 ~ 200) μm
Resolution ≥ 1μm
V01.M-22.10
(1+2L)μm
[L]: m
17 Angle measuring instrument with vernier scale Resolution ≥ 2'
V01.M-26.10
ĐLVN 169: 2005
2'
18 Steel/granite straightedges Range ≤ 5m
ĐLVN 105:2002
(1 +1.2L)μm
[L]: m
19 Length Bars Range: (100~2500) mm
V01.M-31
(0.2+2L)μm
[L]: m
20 Roughness Specimen Vertical range: ( ± 400)μm
V01.M-10.10
0.2μm

 

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