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Old May 8, 2000, 04:18 PM   #1
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Can anyone recommend a good set of calipers and where I can get them? I read today in my Speer manual that in order to effectively measure web diameter, they must be accurate to 0.0001". What do most people use?

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Old May 8, 2000, 09:54 PM   #2
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I use a dial caliper I ordered from Midway. Accurate to .001 and a lifetime guarantee. Actually it is marked in .001 increments, but you could estimate a little bit closer by position of the pointer in between the marks. They do have an electronic caliper that is good to .0005, but to get down to .0001 I think you would have to go to a micrometer. I am pretty new to the reloading game, so I keep everything pretty mild, and am not to concerned about measuring things down to a ten thousandth of an inch. I also only use brass from ammo fired in my own guns, so far I am am still on once-fired brass. Maybe as I get more experience, and acquire more toys I will do it, but that seems more in the territory of the hardcore match shooter.

[This message has been edited by bergie (edited May 08, 2000).]
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Old May 9, 2000, 12:54 AM   #3
Paul B.
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Hueco. I think that most of the dial calipers you will find only go to .001. You should be able to estimate to .0005 without any problem. I'm a retired weatherman, and one of the tasks I had was what was called a barometer comparison. This is where you compare the station's aneroid baromter with a mercurial barometer. We had to read them to the nearest .0001 inch of mercury for the comparison. I am able to read my Mitutoyo dial caliper pretty close to .0001 because of that experience. I doubt that I am ever too far off. Of course, 33 years of practice has something to do with that.
I would imagine that if you went to a supply house that catered to the machinist trade, you could find a dial caliper that read to .0001, but my guess is that it would be very expensive. Won't hurt you to look though.
Paul B.
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Old May 9, 2000, 01:27 AM   #4
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I use a Fowler Digital caliper and it accurate to 0.0001" and it also measure in MM.But I'm with Paul, I only use this one because,I got a good deal on it from my tool dealer. Try Dillon Precision, widway, Lyman has 3 type to pick from.
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Old May 9, 2000, 10:20 AM   #5
Art Eatman
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Also, check some of the discount tool catalogs. I got a stainless steel, dial-type caliper--Mitutoyo--for around $50. It's direct reading to 0.001, and it's easy to guestimate two or three tenths.

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Old May 9, 2000, 02:10 PM   #6
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Midway, 1-800-243-3220. On sale this month for $19.99. Part #603-372. Can't beat it for the money.

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Old May 11, 2000, 08:26 PM   #7
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If you want some the best calipers and measuring instruments made try Starret. Beware they are very expensive. Probably overkill for this. I'll probably buy a digital caliper from the snap-on truck tomorrow. Later, byerly
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Old May 11, 2000, 09:02 PM   #8
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byerly, you'll appreciate the deal I found 2 weeks ago in PA at an outdoor flea market. Guy had a boxed set of 5 Starrett micrometers including an ID post type micrometer. All in excellent condition - $50. It was hard to keep a straight face so the price wouldn't suddenly go up.
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Old May 13, 2000, 04:53 PM   #9
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Deals like that bring a smile to my face. Way to go Mal H. My dad build engines and has several Starrett tools. Later, byerly
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Old May 14, 2000, 10:10 AM   #10
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Buy the Midway for 20 bucks -- accurate enough.

"All my ammo is factory ammo"

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Old May 18, 2000, 09:04 PM   #11
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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by byerly:
If you want some the best calipers and measuring instruments made try Starret. [/quote]

Amen to that byerly. I retired last year after 30 years in offshore oil, and about 10 years ago I needed a slide caliper and a micrometer so I ordered both at the same time. Both were notch quality and top notch price. The price never bothered me in the least seeing as how Texaco was paying for them . Strangely enough somehow when I retired they mysteriously must have "fallen" into my bag, for when I arrived at home, safely for the last time, I found that they "followed" me home. It did not seem cost effecient for me to drive 50 miles and then charter a helicopter flight of 120 miles (one way) to return them offshore so they had to find a new home on my reloading bench. Now if only I could order a new pair of eyes to replace these eyes that need glasses to be able to read these fine Starret insturments!


[This message has been edited by Southla1 (edited May 18, 2000).]
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Old May 19, 2000, 09:53 AM   #12
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Here is a good caliper!!

I have one and it works great.

Tony Z Master Blaster.
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Old May 20, 2000, 02:54 PM   #13
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My biased, but totally correct suggestions:

NO caliper, dial or digital, reads to .0001. (most digital calipers have displays to .0005, but that is their max resolution (they round to the nearest half a thousandth). Yes, you can sometimes estimate a bit closer with a good dial model, but that is not accurate enough for the case web measurement you're wanting to make. You'll need a micrometer for that.

The BEST digital caliper is the Mitutoyo Absolute. (The "Absolute" feature retains the zero setting in memory.) There are several models, mine is #CD-6"CS; bought from MSC for about $110.00. You won't be disappointed!

MSC website is, or phone for a catalog @ 800-645-7270. You'll have to give them the name of your 'business'--just make one up if necessary. They also have their catalog on CD-rom, which I highly reccommend--the paper catalog weighs about 12 pounds (no I'm not kidding; get the CD and save a tree!)

This is one of those tools that continually gives the satisfaction of owning the best...

I wont reccommend a mic; there are lots of good ones out there. try to find a 'friction thimble' model if you can, for a bit better 'feel'.

Best, weegee

[This message has been edited by weegee (edited May 20, 2000).]
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