Really cheap digital calipers

[William J. Beaty]

Those Chinese 6in digital calipers used to be $69 everywhere. They're
the steel ones with 0.0005" display. Harbor freight tools had them
for $39 for awhile... Good Lord! (choke!) I just noticed that Harbor
Freight has them on sale for half price! They're still $60 over at
Jameco. Damn. I already bought a cheap plastic version a few months
back.

$19.99 Cen-tech 6" digital caliper
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=47257

If you really want cutting edge product with 0.0001" display and serial
comm jack for PC interface, get an expensive one. The above device is
exactly the same as the 'good calipers' that the people in the lab were
always fighting over, back in 1992 when I was at Eaton Photocontrols

PS

If you want to experiment with night vision scopes, Harbor Freight
has a cheap Russian one for $70

$69.99 2.4X scope w/illuminator
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=45372

PPS

Sounds like I'm an ad copy writer for Harbor Freight. Maybe I should
call them up and ask for kickbacks. Also, right now I'm
looking for a cordless screwdriver. The decent ones are like $120.
Harbor Freight has one for $16. Has anyone here bought one of these?
I mean, are they total crap? They certainly won't be like Makita or
anything. But are they worth even the $16?


((((((((((((((((((((((( ( ( (o) ) ) )))))))))))))))))))))))
William J. Beaty Research Engineer
[email protected] UW Chem Dept, Bagley Hall RM74
[email protected] Box 351700, Seattle, WA 98195-1700
ph206-543-6195 http//staff.washington.edu/wbeaty/

 

[Henry Kolesnik]

I wonder how good these are, accuracy, precision, repeatability?
Anyone running tests?
I have an early Starrett LCD digital that cost big bucks several years ago
and used mecury cells!
These mercury cells are unobtainum today..
I found a close cheap alkaline replacment at Walmart..

 

[William J. Beaty]

I wonder how good these are, accuracy, precision, repeatability?

The ones I had at a past job look identical to their photos. For
0.001" electronics use I never saw any weirdness. Much better
than the flexible plastic ones. The only thing I wondered about
was how much they shrink in outdoor cold weather, but I never
tried it.

Anyone running tests?
I have an early Starrett LCD digital that cost big bucks several years ago
and used mecury cells!
These mercury cells are unobtainum today..
I found a close cheap alkaline replacment at Walmart..

Maybe that's why they're $20. If they call out a mercury cell,
the seller can't just cross out that part number and write in
a replacement... but the buyer can.


((((((((((((((((((((((( ( ( (o) ) ) )))))))))))))))))))))))
William J. Beaty Research Engineer
[email protected] UW Chem Dept, Bagley Hall RM74
[email protected] Box 351700, Seattle, WA 98195-1700
ph206-543-6195 http//staff.washington.edu/wbeaty/