Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 (Tek) 9/28/84 based on 9/17/84; site teklds.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!vax135!cornell!uw-beaver!tektronix!teklds!riks
From: riks@teklds.UUCP (Rik Smoody)
Newsgroups: net.nlang
Subject: Re: GO, NO GO
Message-ID: <694@teklds.UUCP>
Date: Fri, 17-May-85 17:45:07 EDT
Article-I.D.: teklds.694
Posted: Fri May 17 17:45:07 1985
Date-Received: Sat, 18-May-85 23:53:19 EDT
References: <477@utai.UUCP> <1521@aecom.UUCP> <1449@sdcc7.UUCP>
Distribution: net
Organization: Tektronix, Beaverton OR
Lines: 24

> >	BTW, anyone want to give a history on "no go", which seems to be
> >orphaned in this world of the Space Age?
> I seem to recall from somewhere that decision points were known as "GO, NO GO"
> points.  I think it may have come from some text on computer algorithms,
> but I'm not sure, it could also be from the space agency.

I suspect it's nothing so high-tech as that: suppose you are making
mechanical parts with a tolerance range.  Instead of measuring
carefully with a micrometer, and comparing the value to the
upper and lower limits, you create a "fixture" with
two gaps: one is at the lower limit, one at the upper.
Now your part should GO through the big hole, but not (NO GO)
through the small hole.  You spend a bit of time setting and
callibrating your jig, but it saves a bit of time for each of
thousands of parts.
    I heard of these back in high-school shop classes.

Rik Smoody		- they disclaim me around here, too.
    uucp: {ucbvax,decvax,pur-ee,cbosg,ihnss}!tektronix!teklds!riks
    CSnet: riks@tek
    ARPAnet: riks.tek@rand-relay
    US: 2400 NE 25th, Portland, OR 97212
     or: MS 94-442, PO Box 4600, Beaverton, OR, 97075
    AT&T: (503) 249-8300, 629-1237