Just guesses of course, but...
272. Some sort of screen door fastener. Maybe to hold the glass or screen
273. Sprinkler pipe clamp.
274. I would guess at an old chaulk or ink dispenster for carpenters, etc.
277. Cheap but effective "nut" for use on fiber board or soft woods with
light duty carriage bolts, etc. Digs into the wood as you tighten the
fastener and thus does not spin?
Joe Agro, Jr.
My eBay: http://tinyurl.com/3n8gj
Know a good travel agent? I need one. Really.
Actually called a "teenut," (works similarly to real teenuts for
clamping workpieces for machining, but in wood or plastic to mount
various positioning aids) Use a lot of them making custom wheelchair
I am sure others will point out that the Roman numeral L stands
XL would give 40
XLIX would give 49
But inquiring minds would like to know if
IL would work?
(top posted for your convenience)
Keep the whole world singing . . . .
DanG (remove the sevens)
There are those who say that it's bad form to subtract anything
but the next lower "denomination" from a given symbol, i.e.,
XL, 40 plus IX, 9, gives 49. But you can't do VL for 45 or IL for
49. I think XC works for 90, but not IC for 99 or VC for 95.
But I'm pretty sure that that's mostly a "school of thought", as
opposed to a hard-and-fast rule.
BTW, I know what 272 and 277 are, but am afraid to guess on any
of the others, except that 273 looks like a holder of some kind
for something round. Maybe a bipod for a boresight scope or
I've always wanted to see a step by step example of how a long division
problem with a couple of "not too easy" numbers is solved in the Roman
numeral system. Can someone show me/us one?
The ancient Hebrew numeral system is even simpler as only addition is
needed to determine the full value, there's no subtraction of lower
denominations located to the left of higher ones. If interested, see:
*First* you figure out how to do multiplication. <grin>
(note: multiplying by *five* or *ten* is easy -- all you do is 'change the
letters'; multiplying by anything else is *messy*.
e.g., what's "IV * XL"?)
Division is done by 'multiply and subtract'. and 'summing' the various
multiplicands that you end up using..
Note: some of this stuff was *easier* with 'early Roman' numbering -- which
did *not* have the concept of the 'prefixed' symbol for a 'negative'. The
_position_ of a symbol simply *DID*NOT*MATTER*. IIIXVLCC meant exactly
the same thing as CCLXVII. this made for "simplified" addition -- you
could just concatenate the two numbers. Or, if feeling fancy, sort the
symbols by 'magnitude', and replace 'excess' occurrences of any particular
symbol with a single occurrence of a larger-magnitude symbol. repeat until
no further reductions were possible. Example:
IIII * XXXX = XXXX + XXXX + XXXX + XXXX => XXXXXXXXXXXXXXXX => LLLX => CLX
Division is _relatively_ straightforward in 'early' numbering. It is fairly
simple to find the largest 'power of ten' (or 5 times a power of 10) of the
divisor that is smaller than the dividend. This is, after all, just a
'shift the characters', operation. So, you subtract that value. and repeat
as needed. Note: you'll never have to subtract the same value more than 4
times, so the process is _not_ all that onerous.
With "late" Roman numerals, I strongly suspect that division was accomplished
by first 're-writing' in 'old style', doing the division, and 'reducing' the
On Thu, 17 Feb 2005 17:51:59 -0500, Jeff Wisnia wrote:
When I was a kid, there was a series of books either by Time-Life or
Bell Labs/Disney or something, with all kinds of interesting scientific
stuff. In the volume on numbers, there's a cartoon of a guy trying to
do long division in Roman numerals. ISTR that after filling up a whole
page (like filling up a whole blackboard in a comic strip) the guy
gives up. :-)
Yep! What you photographed is a steady rest, not a lathe dog.
It is intended to have telescoping arms extend out of the three arms
shown at 120 degree intervals. The knobs on the end of the arms extend
the inner ones to contact the workpiece and support it on center as it
The lathe dog shown in the puzzle clamps onto the workpiece with
the square-headed screw, and a pin from the faceplate fits between the
two legs to rotate the workpiece with the spindle while it is supported
Email: < firstname.lastname@example.org> | Voice (all times): (703) 938-4564
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272: miniature robot splint
273: guardian from "City on the Gates of Forever."
274: home enima kit
275: Captain Hook's first prosthetic, when he was "ensign funny-hand."
276: Arnold Schwarzenegger's Terminator eyepiece
277: Captain Hook's second prosthetic, when he was "liuetenant
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