BHARAT HEAVY ELECTRICALS LIMITED
TIRUCHIRAPALLI – 620014
QUALITY CONTROL DEPARTMENT
CALIBRATION CENTRE
Date: 08.10.2015
Various Gauges & Instruments are used in our day to day activities for taking measurements especially by
production, Subcontracting & Quality control functions. These Gauges & Instruments are to be calibrated
periodically at their pre-determined intervals. The calibration periodicity of various Gauges & Instruments used for
taking measurements are as per the table given below. All instruments and gauges indicated below shall be sent
to Calibration centre before the expiry of calibration validity for due calibration. The same is uploaded in Quality
Homepage for reference.
INSTRUMENT / GAUGE TYPE
CALIBRATION
FREQUENCY
IN MONTHS
OUTSIDE MICROMETER
06
INSIDE MICTROMETER.
06
VERNIER CALIPER, DIAL CALIPER, DIGIMATIC 24
CALIPER, GEAR TOOTH VERNIER, SPECIAL
VERNIER, ETC OF RANGE 0-4000 mm/0.020 mm
EQUIPMENT
CODE
PREFIX
M
IM
V
VERNIER CALIPERS Other than 0-4000 mm/0.020 mm
12
HEIGHT GAUGES.
PROTRACTOR, BEVEL PROTRACTOR AND
COMBINATION SET.
COINCIDENCE SPIRIT LEVELS (Shop used )
PLAIN PLUG GAUGES, SECONDARY MASTER
PLAIN RING GAUGES/WORKING RING GAUGES.
THREAD PLUG GAUGES AND TAPER THREAD
PLUG GAUGES OTHER THAN UNIFIED THREADS
UNIFIED THREAD PLUG GAUGES
THREAD RING GAUGES AND TAPER THREAD
RING GAUGES OTHER THAN UNIFIED THREADS
UNIFIED THREAD RING GAUGES
PROFILE GAUGES, TEMPLATES AND SPECIAL
PURPOSE GAUGES
DIAL INDICATORS(PLUNGER TYPE OR LEVER
TYPE)
BORE DIAL GAUGE
TAPER GAUGES
24
24
H
B
12
24
SPG
24
SSP
12
24
SR
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12
Once in life
time
12
12
24
PG
DG
BD
TP
BHARAT HEAVY ELECTRICALS LIMITED
TIRUCHIRAPALLI – 620014
QUALITY CONTROL DEPARTMENT
CALIBRATION CENTRE
Date: 08.10.2015
INSTRUMENT / GAUGE TYPE
PRECISION STRAIGHT EDGES.
PRECISION SQUARE
PASSAMETER
DEPTH MICROMETER
DEPTH VERNIERS
SLIP GAUGES, WORKING STANDARD SLIP GAUGE
AND SLIP GUAGE ACCESSORY SETS.
SINE BARS.
STEEL TAPES, STEEL RULES AND PIE (π) TAPES.
SHOP USED PROTRACTORS
SHOP USED STRAIGHT EDGES AND TRI SQUARES
COATING THICKNESS GAUGES
SECONDARY MASTER AND WORKING OPTICAL
FLATS
TORQUE WRENCHES /TORQUE HANDLES
SOFT THREAD PLUG GAUGE, SOFT THREAD RING
GAUGE, SOFT PLAIN PLUG GAUGE, SOFT PLAIN
RING GAUGE AND SOFT PROFILE GAUGE.
ANGLE GAUGES
FEELER GAUGES.
RADIUS GAUGES
CALIBRATION
FREQUENCY
IN MONTHS
24
EQUIPMENT
CODE
PREFIX
SE
24
12
12
24
24
TS
DM
DMR
D
SG
24
Once in Life
time
36
Once in Life
time
24
12
SB
ST/S/ PIE
24
03
TW
SSSP/ SSR/
SSPG/
SSPR
AG
FG
RG
12
24
24
P
SS/ T
C
OF
It may be given wide publicity in respective areas where the above mentioned gauges and instruments are being
used.
Amit Roy
AGM/QC
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