ChgImposs Metric & Imperial Screw Gauge SAE Whitworth 55 Degree & Metrisch 60 Degree Thread Pitch Gauge for Industrial Measurement
Score By Feature
OveReview Final Score
Product Description
Questions & Answers
CENTIMETERS, not millimeters, are used to count the number of threads per centimeter.
It begins at 0 on the metric scale. 1 through 25 On the small side of the set, there is a 0 on the small side. It starts at 1 on the bigger side. 25 to 4 are the numbers. On the Whitworth side, it ranges from 62G to 19G on the small side, and from 18G to 4G on the large side. I hope this has been of assistance.
Selected User Reviews For ChgImposs Metric & Imperial Screw Gauge SAE Whitworth 55 Degree & Metrisch 60 Degree Thread Pitch Gauge for Industrial Measurement
What's the temperature at Whitworth? Is it 60 degrees outside? Neither of them are names I'm familiar with. The only thing I know is that I need to replace two brass bolts from an outboard motor. br>br>After looking through the options on this thing, I discovered that 20G corresponded to the size of my bolts. Is it Metrisch or Whitworth now? I'm not sure; since there's no manual, I'll have to rely on the Amazon description. Whitworth appears to be anything with a "G" at the end. I'll just Google 20G Whitworth and see what I can come up with, right? Nope. Any British Standard Whitworth (BSW) specification does not mention the letter "G. " br>br>20G stands for 20 threads per inch, as it turns out. So this is a thread density gauge that is measured in made-up threads. up units. It's a bit confusing, but it'll do until the plastic fasteners that hold it all together fail. If you don't like your tools to be thrown away, this is a no-no.
I've never seen a more perplexing set of thread gauges in my life; typically, there are two sets, sae and sae. metric. There were a bazillion in this set, and there was little information to figure out what they were. Not to mention the suckiness of the screws that keep everything together.
Thread gauges can be divided into three groups. It contains a large number of metric sizes, far more than I will ever need. Then there's a large group of standard/imperial thread pitches (threads-per-inch) to choose from. per- "Whitmore" is the name of a character (about an inch tall). Then there's a small third group in the middle of the tool that are basically duplicates of the Standard pitch guages (the only difference is that Whitmore threads are cut at 55 degrees, whereas most standard threads are cut at 60 degrees; The angle of the teeth, not the number of teeth per inch, is the only difference that can be seen with the naked eye.
"Metric" was one of the films I saw. "Imperial," I reasoned, "but there will be regular freedom units. " But I saw Whitworth and thought, "Why not?" It couldn't hurt, right? But I believe the "Imperial" in the description refers to the Whitworth form - Which, if you think about it, is a non-metric threadform, i. e. It's a threadform that's known as "imperial. " You'll get the following: Whitworth (metric) and Whitworth (British Standard). br>br>Now that that's out of the way, I'm the ideal customer for this product because I already have a couple of perfectly functional thread gauges for standard American 60deg teeth per inch threads. I only needed the metric part, and since I was already familiar with standard American units, it seemed reasonable to add exotic antique British threads to my repertoire. If you were an antique restorer or collector, I believe this Whitworth form (which I believe was the first standardized threadform) would be useful. Threads like these could be found on old bicycles, engines, machine tools, and so on. I believe you could use this to check the threads per inch of common American hardware store bolts, but I would be wary of holding it up to the light and attempting to match the exact thread shape. br>br>The metric side, which is why I bought it, appears to be in good shape. I especially liked how they stamped the German word for "metric" - If you live in the United States, using metric is akin to going on a nice foreign vacation. Some people expressed dissatisfaction with the markings' visibility. My eyesight isn't great for things like this, but I can see the markings just fine without using a magnifier, and they don't appear to be weakly printed, but rather durable stamped. br>br>I checked M4, M5, and M6 coarse threads, and they all appeared to be in perfect working order; I can't guarantee that all of the values are correct, but these are the most common three I'm concerned about. This tool is an excellent value for the money. br>br>.
Garbage. I should've read more and had a lower expectation. In my career, I've only seen one Whitworth bolt. Metric is hit-or-miss, and the US gauge lacks a 20 tpi, the most common of all sizes. $9 was thrown away. I'd give a 0 if I had the option.
After a quick trip to the local fastener store, I got the appropriate thread size in about 15 seconds and ran a center punch down the hole to get the depth/bolt length, and the machine was up and running in about 30 minutes. We've saved about 20 minutes per piece of equipment we're pushing out by having the old machine up and running. Within the first hour of work, this gauge had already paid for itself.
The picture on the internet is misleading because this is EXTREMELY TINY and difficult to read. Furthermore, the small metal pieces do not stay in place well, and they will fall out of the way when you are trying to see the one you've selected.
It appears to be a decent tool, except for the visibility of the size stamping. Despite the fact that I wear reading glasses, I had to squint and tilt to get the perfect lighting.
Related Products For ChgImposs Metric & Imperial Screw Gauge SAE Whitworth 55 Degree & Metrisch 60 Degree Thread Pitch Gauge for Industrial Measurement
