Devonian High-Precision Transparent Crack Width Ruler,Scratch and Spot Appearance Inspection Ruler (5 Pcs)

Worst product. Worth only 100 rupees maximum. Plastic sheet with readings. Don’t buy

works as advertised

A little too flexible but useable

A set of 5. I use these for registering scale on my macro photography. Very useful

First off, these little plastic gauges would be fantastic for measuring small cracks and holes with precision. And if I were using them for this purpose, that would be fantastic! But I'm not. Why did I get them? Because they're clear, flexible, and they have 80mm worth of metric measuring along the side! True, I can actually use the other gauges to measure line and hole thickness, to around 2mm or so, and I've used it for that purpose once or twice, but to have the high-precision (0.5mm!) 80mm ruler on the side is huge. I keep these on my workbench, and when I need to measure something less than 8cm, to within a 0.5mm accuracy, this is my go-to ruler. The fact that it's clear and flexible means that I can curve/bend it around items a little, which helps a lot. Not only do these have all these features, but you get a five pack of them as well, so you can have them on different areas of your workbench, or even have one on a desk or two, as well. It's very nice to have backups. I misplace rulers all the time, to having a few around is very helpful. In the end, if you're looking to measure cracks and holes at or below 2mm, or if you need to measure things with high precision, in metric, up to 80mm (at a precision of 0.5mm), these are essential. Solid build, flexible with a thoughtful design. These are an important part of my toolkit.

these will fit in a shirt pocket along with your pocket protector if you are an engineer type :-). As an architect, I got these to help with construction job site review and for rehabs instead of just guestimating a gap or crack size I thought I could be more accurate, but the problem is I have to have my readers on to read the printing. I was thinking this would be a bigger tool so the size is a pro and con. Star Rating System (What do my star ratings mean?): 1 STAR - Completely unusable, would request a refund 2 STAR - Meets minimum viable product requirements, wouldn't purchase it again 3 STAR - It does what it should, but in a non-spectacular way, I may recommend it, but definitely with reservations 4 STAR - I like it. It is solid quality and delivers as advertised, I would purchase it again and recommend it to a friend 5 STAR - I love it. It meets or exceeds all of my expectations and is high quality, I would purchase it again and would openly promote it to friends As an Amazon Vine Member, I give honest reviews, whether or not it is a good one or a bad one. I'm a person who immediately checks reviews on everything, and I understand how important an honest and thoughtful review is.