Upload
diego
View
379
Download
32
Embed Size (px)
Citation preview
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 1/20
B riti
sh
S
t
a
nd
ar
ds
--·
- ~ ·
aisi
ng
stan
dards
wor
ldwide
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 2/20
Tex
t a
ffectedmd.
No
.
Ame
ndmen
ts is suéd since publication
Publkation h i
story
First published February 1 940
F i
rst
M
ay
1
950
Second revisión Ju
ly
198
2
(p
r
esen
t
)
r
ev
i
s
i
o
n
T
he foltowng 85 1 reterences re
la
te to the wcrk on this
sta
ndard
:
Draft for
c
om
me
nt 0813 01n877
O
C
O
B S I 2
008
I
SBN
9
78
O
580
6
2
0
3
1
7
I
CS 17 .040.30
T
he 8
SI c
opy
ri
ght ocñce d
i
spt
a
yed
i
n this
doc
ument
i
n
dica
res
wn
enthe
docum
e
nt w
a
s
tes
t
l
ssu
ed
.
PubliS h lng and copy
r
ight lnfonnatlon
B R ITISH STA ND A R D
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 3/20
0
85
2008
Sum.mary
front
pages to 1 1 , b. 'Jck
eeb
eem
11
g o1
test 12
C
1 4
B lb logr
aphy
Ust
fi
gures
and rheir nornendature
F1gu~ 2- O lstanm ofvernter ma ln se.ate
s
ca e
wlt
h
I
n centlmetres
I
n lnches
Ust lables
ot J
3 - lntema m ea
su
reme-nts
4- L ay ou
t
1 1
11
J I
1
S
cope
1
2
5
Sc a l
es
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 4/20
.O B
S
I 2008
Contra
ctua
l
and legal cons ide
r
atlons
putport a
ll
thé
cont
ra<t.
resp
onsi
befor
c
o
rrect
COmpllan«i wtth a BrttlshStandard cannotconf&r mmunlty from
l
éga
l
ob
ll
gations
P
resentation
a l c
onve
nt
ions
Th
e p
rovlsi
o
ns th
l
s sta
nd
ard are
presen
ted In
ro
man Il.e
.
uptight)
lts
e
xp
t
essed
ls "shal
l"
.
Com
m
tmtary,
exp/anation
t
fld
gerteral
in
fotmbtf
Vé
m;,terlal Is
p
t
eseflted /
() sm
a{l
er ft;,
llc
type
1 C)ftd
d
OM
no
t
onstlt
ute.,
n
o
ff'Mtive
element.
l
nfor
mat
i
on about thls document
T
hl
s
st
a
ndar
d
has.b
ee
n ré V lsed1
0
b
l 'i
ng u
p todat
e.
thé
D
I S
P
art
1 : Ca l ll
pe~:
Oeslgn
a
n
d me
b 'O loglc a l requl
reme
nts,aJrrentlybelng
b y
lnrtru
me
n
: s :
.
l
t I
nd
cd
es for
a s in
gl
e des
lgn
ofve
mle
r
s e
a e
whl
ch can hav
e graduat
lons
e
i
ther I
n met
rl
c or
I
n
I
m
peria
l
un
tts.
Supersess
i
on
Publishing
i
nfonnation
Thls
Br1 t ish
Standard I s
pu
b
llshéd
BS I an
de.ame
lnto e
ffe
ct on
Technfc alproducteallza t / 0 1 >
be
seaetary.
B R I TISH S TANDARD
5887:
2008
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 5/20
OSSl-2008
•
1
3.2
mea
suring
range
the-
3.1 deviation
read
l
ng
the
the
ar
é
SS 817 , Surfac.t
p
l
ates
- Req u l rem~nts
es
1
1 3 3 - 1
9,
P tJckagfngcode-: s ectl
o
n 19 :Use
o
f deslcc.antsJn
packaglng
es
2
7
95,
Sp
e
c /fie>tl
on
for dial testlnd
lcators (lover type)
for
l/near
Geometrlc
a
/
Product
Sp
e
c
lficatlons
(G
P
S)-
O
lmens om>ImHS
u
rlng
equlpment- 0gfgn
:J t >
d
metrologlca
l
charac.terlrUcsofmechan ati di;.,/ gauge s
2
-c
me
rna
l
an
d
fntema l conte
ct
stand
ard
0.
02
48 scale
se.a
le
t
o
0
.001
I
n .
diS pay,
1
NOTE ~
componen
ts of a
NOTE 2
Recommenáed min
im
u
m
C
.
NOTE
1
Attent
ion
í
sdrawn
t
othe
a
re
of mm marked on
me
íric
calli
per corresp
onds
to
a
000
1
in
cal/iper; whef Ns the actual
0
001 0.0254
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 6/20
2 • O B
S
I 2008
C J )
The projertlonsofthe ja
ws
fro
m
the
édge
ofthe be
am
sha l l
be
The pro
j
ert
l
ons
J of the tw
o [aws
sha
ll be
equa
l
t
o
w
thl
n
0.
03 mm
o
r 0.00
1
I
n
, as s
hall p
roj
ect
to ns
J
1
•
(See F i
gur
e
1
.)
Jaw
s
4.
3
Beam
T h e
with
mm
O
t
o1 5 - 0
Oto6
O t
o 300
Oto 1
2
O to
600 Ot
o 1 8
O to
1 000
Ot
o24
O
to36
01048
4.2 Measuri
ng
ranges
M
a
t
e
r
i
al
The slld
e
r
and
beam sh
a
ll
bé
o
f ce
rbc
n
stH-
o
r
s
talnl
es
s
steet ,
ran
g.é
1
0
ºCto 3
0
ºC .s h
a
ll
be
(
11.5±1.
0) x
H r
rc
Th
e
measu
reme
nt
not l
ess
than
550
H
V-fo
r
staínl
ess
steel.
F
lnls h
éd
c a ll lpe~ sn
eu
be
f
ree fto
m
lntema
l stresses.
85887:
200
8
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 7/20
0
85
2008 • 3
8 G u
ldin g surte
ce
1
0
Pe
ces
f
or ntefn
al
measurement
1 1 Nom
i
nalcombined
w icttn o
f
th
e n
terna : measuñ
ng
ja
ws.eg
.
10 mm S.S)
2
3
4
F
ine
adjustmen
t
la
mp
5 Fine
adjustm
en
t
6
V em
l
er
s c a
t
e
to
9
1
s
. . .
6
\
8
t)
2
3
4
the
BRITISH
STANDARD
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 8/20
85887:2008
B R I TISH
S T
AND
ARD
Ta
b l
•2 J
a) Metrlc
MeMul'i
n
g Projectlon J
M
ln
lm
u
m
M ax
lm
um
mm mm mm
O to1 S O
30
5
0
o 300
s o
70
o 600 S
S
7
5
Oto
1
000 60 80
b)
I
mperial
calllpors
Proj
ect
lon
J
M l
n
l
mum
M
a
x l
mum
In
I
n
ln
Oto
6
1 .2
5 2
Oto
12
2 3
Oto
1
8
2 3
Oto 2A 2.2
5 3
Oto 36 2 .5 3
Oto48 2 .
5
4.4.2
F
acesfor e
xte
rn
a
measurement
for
measuré-~nt
that o
f J
T
h
e faces shall
b
e flat to wlthín
0
.
00
5 mm 0.000 2 I
n
,
p
arallel
10 3 a
n
d s
h
atl
h
ave a s .u
rf
ace fi
n
lsh
0.1
4
or
0.
032 l
n
. The face of me fixed jaw (A)
sh
all
b
e
sq
ua
r
e to me
gu
l
d
lng
F
aces
for nterna
measureme
nt
st J
rf
ace f
n
l
sh
of
n
ot le-ss t
h
a
n
pm
o
r 1
6
). l l
n
ata c
u
t-off velue
0.
8
0
.032
4A.4 Allgnment of
ja
ws
Wh
en t
h
e
s
li
d
i
ng [ew
Is d
ampedto
t
he b
eam
I
n t
he
te
ro pos
hl
o
n
the
of
(A .
or0.002 In.
o
8512008
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 9/20
CB S
I
2003
•
5
oí
of
s. 1 G eneral
% 0.0005~
O
to6
O
to 1
2
O to
1
8
O to36
Com
b lnéd
s
lzé
Pa
r
aU el l
sm of
theiace<
0.000
5
J
aws
0
.
1 8
7
0
.
25
0.
25
0.
3
0.2
5 0
.
3
0.
25
0.
3
0.3 12
0.
5
0 .3 1 2 0.
5
(b
)
0.01
5
1
0
1
0
1
0
0
1
01
5
0
4
6
Oto600 6
Oto1000
6
the
fa<
es
M a x l mu:m
error l : nJ
nlm
um
comb
i
néd
wldth
4A.5
Slider
be
th• of
to
be
sea
fo
r
mee
so
reneot
not b
y
3
F ac
M for lnte.rn
a
l m e a . < S urements
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This requ
ír
e
ment doe
sno
t appl
y
to
callipersh
av ing sepe
re
t
e
s c a l
es and vernters
w
h
i
ch
penn
itd
i
rect r
ea
d
i
ng
of
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 10/20
Fi t t ing of vernier scale main scale
Th
e
dl
stana?
f
rom F
aeé
th
e
G rad
ua
tion marks
0.00
7 o
.
o
s
0
.002
wth 8.3.
5.3
Position of the scales (see F i gure
1)
the
l' l
g
ht
be
s ca e
whh 1 W O
ca
l l l
pé
B wlth
faw
the
5.2
6 • C B S I 2 0 0 8
NOTE l
t
recomme
n
ded
that
fo
r
e ase
of read
ng
the
suriece
of
have a dull finish, and th<Jt the
be
85887
:
2008
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 11/20
0852 0 08 • 7
2 Ve
mi
er
3
S
lld
et
3
3
1
F i
9u
í
e - 2 Di
sta
nea
et
vern
let
ma
t
n sea e
85887
:
2008
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 12/20
8
•
05 1 2 0 0
8
(b) Imperialsale
Vé
mle
r se.ale
l.ength Graduat
l
onsand
dM
s
lons n
u
m b ert ng
O
.
O
S O I n
s o
2.450 n
Stll sh•l l
V
E R
ln
terva ls
0.
001 In
(see 5)
o 1In234 s 67 etc,
10th H ne exten
d
ed
cach
O.
ln l l ne extended
o
1
0
20304 Q 5
0
V E R
0.02mm
n
umbeee
d
:
0
1
234567890
E.ac
h 5 mm l i
ne ext
end
ed
SO
01 cm234567otc.
1
l
ntervals
(see 4)
V E R
0.02mm
numbeeed
:
o 0. 1 0.
2
0.3 0.4 0.
5
0.60.7 0.8091.0
E.ac
h 5 mm l i
ne
extend
ed
SO
o mm 10 20 30
4
0 50
e
tc,
1
lntervals
(see
G
·
radoatlons
and
dh1 l s ons
(•) Mell1c <<al •
Vemt.
r
seale
aln seete
T•
bl
e
4 scalos
w
it
h the
t
.e. VE R 0.02 mm or
V E
R 0 .0 0 1
t
n.
vemie
f
btidéS
sh
all be marted "ln
s
l
d
e"
a
nd
"'
en.mid
e" resp
ectjvely.
ne
ve
(A)
I
n c
h
a
r
acters not
l
e-ss
tha
n
1
mm
hl
gh,
t
h
e name
o
r
5.5
scate
L e. elth« (
•
)mm.,,. c m , or (b) n.
NOTE
Figurlng
n
m
illimetres is pre
erre
d or O
mm 150
m
m
and O
to range
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 13/20
08 5 1 2
0 0
8 • 9
NOTE This 0 370
s o
0
Jo 4 00
1
234561
89
123456
)
8
9 1
2345678
9 1
g
t . t r e 5 E
n
latg
é
d v f e w of f é r nl er
e a
le w h : h
m
a ln s e . a le éngr a véd In l n c hes
NOTE This 186
1 1 r r ¡
u n ¡ ¡
m
¡ m ¡ ¡ m
V
er 0
.
0
2 nn
0
1
2
34
6
1
8
90
O
1 a n 2
4
S
6
7
8
l 1 1
1 1 1 1 1 1 1
1
1 1 1
1 ¡
1 ¡ 1 1
l 1 1 , 1
¡ 1 1
1 , 1
1 1
1 1
¡
1
1
,
l 1 1
'
1 1
1 1
1 1 , ,,,
1 , 1 1 1 ,
1r
1 1 1 1
1 1 1 1 1
F 1 9 t .1re E n larg
e d v f e w
of
vern ie
r
sal
e
w
H :h
m
a l n
s e . a l
e e n g r a v - e d I n
centl
m e t r e s
NOTE is rea ngof 1 86 mm
m r
¡
m r
V
er 0
02am
o ~
u ~ u u u ~ ~ u u
O i r m 0
20 30
4 l O
60 7 < l 80
l 1 1 1 1 1 1 1 1 "'1 1 1 1 1 "'1 1 1 1 1 , 1 1 1 1 1 1 1 1 1 , , , 1
1 1 1 1
"'lml
r1rl
1 1 1 1 l 1 1 1 1 I
F 1
gu
~ E
n
latged
v f e w
of
v e r n l e r s c a
l
e w i t h m a fn
s e . a l
e e n g r a v é d I n m l l ll m e t e r s
85887 :
2008
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 14/20
10 • C
B S l
2008
be
a
d
e:sslc ant ac c
ord
ln
g
to
1
1 3 3 - 1
9 o
r
by
bél
ng
wlt
h a
thi
n
NOTE Mea.sured length refe.rs to portion of Jength of the sea ebeing mea s u and is be con sed
the measvnng range ( s ize) of calliper.
Ta
b
l
e
s
Dev1adon
et
'"'d
ng
(a) Metric (b) Imperial
M earured le
ngth
"'adlng
of
l ' éad
l
ng
in In
üe tween O
a
hd 30 0
:z0.02
O
• 0.
001
Ove.r up to and
±0
.
04
Ove
r
u
p
t
o
•
0.
0 0 1
5
l
n
c l
u
d
lng600 lnc
ludl
ng 24
over
600
•0.0
6
O ve
r
24
.0.002
at
ttle- be.
B R I TISH
S T
ANDAR
D
5887:2008
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 15/20
0852003 •
1
1
M
ea.surlng
range
O
to 6
0.625
X
0.125
Oto 1 2
0.75
0 0 .156
Oto 1 8 0.75
0 0 .1
56
O to
24
1 .000 0.1 87
Oto
3
6
1 .2
50
X
0.250
O to48
1 .
31
2
x0
.2 8
1
Tab
le
A
.1 B
M
lnlmum beam
c
r
ou. .séctk>m - lmpetia
l c a
ll l
p
e
rs
R é C . O
mmé
n
déd
mlnlm
u
m
cross-sectlon beam
m
Oto150
1 5x
3
O
to 300 20x4
O
to 600 2
5 5
Oto 1 000
30x6
c t f
T
ab
l
é
A.
A
M
ln l
m
um beam
cross~
a
ctk)M-
Métr
l<
c.alllpers
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 16/20
12
• C I
B
SI 2008
8
.2
. 5 Comb lned wl dth of the l ntemal measuring jaws
the
8
.2
.4
P
arallellsm ofthe facesfor
i
nterna
measure
men
t
8
.2
.
3
Sq
u
arenMs
o
f
t
he
f
i
xed
fa
c
es far
externa
measur
eme
n
t
be
b y
m
e .
8 .2
.2
P a
r
a
l le
lls
m of
t
h
e faces
fo
r
e
xte
rn
a
l
m
ea
s u
r
e
m
ent
o1
b y
pol
nts
the a
w s
at différ
e
nt the
the
o1
20
1
P ar
a l l
e
ll s
m
s
ha
l l
8.2.1 Flat
ness of the faces fo
r exte
m
a
l measu
re
m
ent
($00
es
8.2
M easuri ng faces
8. 1
D eviation of readi ng
S
u
pportthe c a l l
pe
r ao
ng t
he
s tee
ofthe b
eam
w
th t
he ja
ws
measu f '
in
g
b y aca
u
a
cy
me
c
hlne. Che<kth
e
rNdlng
.na
m
i
nlmum
ofat le
astflv
e
1ha
t
b y
Methods of test
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 17/20
0
85 2 003 • 1 3
m t
ceosec
pe w1t:h ~
by b y
BRITISH
STA NDAR D
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 18/20
1
4
•
C B
S I
2 0 0
8
C.
l
A p
p
li
c
ation
thé
Ga
l'é
t
í
ps
b y
ll
g
htly tighte
n
l
ng
lt
s
lock
ng
s c
r
ew
be
c . 2
P
reparation
the -
th
en
b
e
check
ed.
to
be
be
be
be
c . 1
G
eneral
be-
tflat
fctlowed
Annex
c(into
rmativ•>
B R I TISH
S T
AND
AR D
5887:2008
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 19/20
1 5
Standard
s
p u b l í c a 1 ion
s
reterences,
W l
a1éS't
edlt
ioh
the
refee
ence
d doc um
ent
(
lndudl
ng
B S S 3 1 7
, Spt:
cffl~tl
óno
r
metric
l~ng'th
batsand
th ~ lrac c
e
tt0riM
7/25/2019 BS 887-2008
http://slidepdf.com/reader/full/bs-887-2008 20/20
w lde [
I J ) )pe<l l
l
f" ll milli: ln:
il
wOOardi l ' I Y l . ' l u g h ltS
L
l b r ' í tl)
6S I ate elsc
det.:l
i
ls 00
1 1 1 1
iU .
p t \ ) l l C " l . 1
ard
C O O U
Cl
lttt -.
fomutloo
CMUC
T e . 1 :
'
+44
(
0
)
2089961'11
1
F
er. +4A (0
)
20
8996 7048
E tRall: h
tf
oObtigroup
.
co
rn
Su
ng
mooib
m
ó
l
6~
U fl lO&e
vf l .
b.u
a
n hrds
de\ielOpfflen
tJ aod recel\'e :ulwtan
t
i a l d
loco
unts
oo
tltt p o
rd\il
;c p
l'a
f.tarld 1
t
di o f e e s e
+44
(0)20 8996 Fa>e .~ (0)20 8996 7001
membri
lp4lb9: igrau
p . c om
St.a
r.dnrd:i - . 1 & .
be:
at
www
bsSgroup.com
Cop
y r ight
~~ 7 . : .~~ ~=- :18 ~ ~; :_=:~ · ~~:.
r
:
~l.;h
l
~)'t~NloM
' 1 1 . 1 . 1«lan<>~
l'Nf/~.-.;:~:ll) kllníiM\,,.:i
~"' 1 1 1 1
,; n ·
i 1 1 1
o lr1 1""' 1r.s.u-~"l''
" " '
1tt-
:;
~r
~
-.MJ'ó t; r-
~:"~~~.,t5t,. o t . ,: 0 : : . ~ ~ " ~
~
~:1~-~d .. - - . 1 • l l l f A ~ .
«
~Ml'IOIW
ll d
1<
1
V
•
pib'
" I J IOll
f*ilflo<utl
1 1 l . 'Q lfocJ lol
Daii-'d l't:o
n .:o::¡i
'W
:""4
f O P 4
1 1 9 1 > 1,.,0
t-.
1:~
~ +4A (0)20
89
96 9001
F
a
t
+U
(0)20
899
6
700
1
conv'stand&fd.;
BSI Group
Headquarte
rs
ft tW I ~
O
n21'S
651. tnemeUor.
S-e
n
df
D 'd g
n
.t. '100
~
p.ib
i
rd
be 6 . S I
TH
:
. . . . 4 . 4 (
0
)
2-0
8996
900
1 h
it
~
+44
(
0
)20 8996
7
001
'm u mHf
a l
oo b u ~ · dlrectfy a deb
l
vm-dlt a.. " l l
l
m1n
t
h
e B S
Shop
o
n ite w w w
.
b s igroup.c om/S'hop
I n r e s p o n s e too m e r s l o r titen- . a t O t " I B I
ua
nd l
rds,
• 8 5 1 pc l l cy to
.\ U
p p l y
l
he B S
I
lm p
le
m
e r r t . a
t
b'I
o f uese th a
l
h & v
l:
bt:len p ub l
l shtd
as
B
litl
stl S
U I M W s , .
un\s
$ t l ' l e t 1 .\•
l ; e -
""ll.le :ie:f
S
~ocj¡ytl¡
h
ouh J make su~ lhat
they
pcssess
úic
t s tes
t 1 r n
er
u
:tre
: 1 u :
tdl1100S
to
al º " '
b e
1 . 1 > 1 n g \'O uldtlfom'\
tedw'l
i G a l
c oo wr i t t
~ res
f)Of'ISlb~
t
h
e
ld
toüt-/
•J
lh dl c an
fou
M
+44
(
0
}
2
0 8996 9000 f
.it
:
+44
(0)20 8996 7400
S t ' r ' Y k : e c al ed
ttiet
su~
m
a
ui«r. .alica
fl
y rKelut lh~
e
tes t
o
f
level