Marvelous Mibs Marbles Collectors Zone

Ponkochan

I was using an electronic caliper but now i's broken and I am trying to figure out how to read this one. Can someone please help me out and 'splain it to me? Question

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Lizzy

greatmacscott · Joined: 08 Aug 2007 Posts: 49 Location: Gladstone, MO

Looks like 2.2 inches to me, but I am color blind Embarassed

migbar · Joined: 04 Aug 2007 Posts: 135 Location: central California

It might be 2.2 centimeters.
I'm afraid that don't translate to inches.
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let's enjoying marbles ! Glass is good.

Ponkochan · Posted: Wed Jun 30, 2010 3:33 pm Post subject:

Thank you guys for your responses. Smile

I just realized that the first picture that I posted didn't include the markings on the caliper..............showing what is cm, mm or inches.

Does this help?

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Lizzy

greatmacscott · Joined: 08 Aug 2007 Posts: 49 Location: Gladstone, MO

how about a hair under 7/8 inches?

The didn;t teach metrics when I was in school.

bigjohn691500 · Joined: 05 Aug 2007 Posts: 254

11/16 in. count the lil marks on the inch rule,, bj

Ric · Joined: 20 Nov 2007 Posts: 12

OMG, Lizzy . . . I haven't used one of those since I was using a slide rule . . . but here goes:

1st: Read the 1/16" marks where the zero lines up on the top scale. In your example, that's between the 13/16-14/16 mark. So the marbles bigger than 13/16 but less than 14/16.

2nd, look across that top scale (the 1/128 scale) until one of those marks lines up directly with one beneath it. In your example it looks like the 7/128 line.

Soooo . . . that marble is 13 x 8/128" = 104/128" + 7/128" = 111/128"

And trust me . . . it's still easier than using a slide rule! Laughing

P.S. You might want to round that off to 55/64" (the low side; - 1/128") or 7/8" (the high side; + 1/128") Smile

BobandPat · Posted: Wed Jun 30, 2010 4:53 pm Post subject:

I agree with Ric except the 5th line on the 1/128 scale lines up closer to the corresponding line under it, making it 2/128 or 1/64 of an inch smaller than Ric's calculation. Razz

Bob

BobandPat · Posted: Wed Jun 30, 2010 5:09 pm Post subject:

Now if you want to use the metric scale..... the 0 doesn't quite make it to the 22nd millimeter line, so it's 21 mm plus . (point) 65 mm because the line between the 6 and 7 lines up with the line above it, making it .65 mm. So 21 plus .65 equals 21.65 mm. Sooooo you then take 21.65 divided by 25.4 and that equals .852 of an inch.

Bob

Ric · Joined: 20 Nov 2007 Posts: 12

When you're talking 1/128" it'll depend on which picture you look at. I was using the first. Laughing