tag:blogger.com,1999:blog-380522872011-04-21T18:50:26.991-07:00What is it? Answers 148Rob H.noreply@blogger.comBlogger11100tag:blogger.com,1999:blog-38052287.post-1166133125572415712006-12-14T13:51:00.000-08:002006-12-15T16:35:47.183-08:00847. <a href="http://www.jonzimmersantiquetools.com/features/saw_filing.html">Saw set gauge</a>, for crosscut saws. <br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic847.jpg"><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /> <br />848. This came from the inside of a 9 volt battery.<br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic848z.jpg"><br /><br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic848w.jpg"><br /><br />A month or two ago Popular Science magazine had a short article about how to make a small safe for valuables from a battery. I would never use one as a safe, but I opened one because I hadn't before seen what was inside. I had mentioned the battery safe to a friend of mine last week and a day or two later he showed me a post card that he had received from Popular Science warning against doing this project, since the batteries could possibly rupture. <br /><br />A much better idea is to <a href="http://how2dostuff.blogspot.com/2006/02/how-to-make-secret-hollow-book.html">make a book safe</a>, this is a great project, I made two of them to give as Christmas gifts. <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />849. Placido's disc for astigmatism, used by an eye doctor to measure the regularity of the cornea, thanks to <a href="http://www.phisick.com/zophth.htm">phisick.com</a> for use of the photo.<br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic849e.jpg"><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />850. <a href="http://www.visgage.com/page_2.htm">Visgage</a>, oil viscosity tester, patent number <a href="http://www.google.com/patents?vid=USPAT2609682&id=h9FcAAAAEBAJ&dq=2609682">2,609,682</a>.<br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic850zc.jpg"><br /><br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic850zb.jpg"><br /><a href="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic850zbl.jpg">Larger image of the instructions</a><br /><br />As seen in the link, Google now features a <a href="http://www.google.com/patents">patent search</a>, I've tried it a few times and it seems to work well. <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />851. <a href="http://jonzimmersantiquetools.com/features/no_30.html">Stanley No. 30 angle divider</a><br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic851x.jpg"><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />852. <a href="http://www.qsl.net/n6tt/bunn18.html">Bunnell pen register</a>, records an incoming Morse code message.<br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic852aa.jpg"><br /><br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/pic852b.jpg"><br /><br /><br /><br /><br /><br /><br /><br /><br /> <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />Last week's set is seen below, <a href="http://puzzlephotos.blogspot.com/2006/12/set-147.html">click here</a> to view the entire post:<br /><img src="http://img.photobucket.com/albums/v80/harnett65/Album%205/set147.jpg"><br /><br /><br /><br /><br /><br /><br /><br />More discussion and comments on these photos can be found at the newsgroup <a href="http://groups.google.com/group/rec.puzzles?hl=en">rec.puzzles</a>.<br /><br><br /><br><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/38052287-116613312557241571?l=pzphotosan148-a1.blogspot.com' alt='' /></div>Rob H.noreply@blogger.com0