17 Nov
2003
17 Nov
'03
7:48 a.m.
On Sun, 2003-11-16 at 21:11, Don Maslin wrote:
Do the illustrations indicate whether the dial
indicator is in the
same general position (other than what part of the disk the ball
is contacting) for both runout and flatness? If so, my
supposition of lifting the ball from the surface is likely wrong.
I would then surmise that it actually converted the motion of the
ball from normal dial indicator to what we used to call a
'wiggler', IIRC, where lateral movements were shown as
displacements on the dial.
- don
I don't remember for sure what the illustrations showed, but yes, that
is what the lever is for. It switches the part that the ball is attached
to from being along the line of the body of the dial indicator, to being
almost perpindicular (almost 90 degrees) from the body of the dial
indicator.
Jay: I haven't seen the one at Harbor Freight, so I couldn't tell you.
The one we had was very _similar_ to the one picture at this webpage:
http://www.mini-lathe.com/Measurement/Dial_indicators/Dial_indicators.htm and is the first
picture under the heading Dial Test Indicators. Also looks similar to
http://www.brassandtool.com/Dial-Indicators.html item W52-563-777...
TTFN
Andrew