Plastic Vernier Caliper (2pcs), 150 mm Mini Plastic Caliper for School Student, Portable 0-6 Inch Measuring Tools, Sliding Gauge

I work in HVAC and these are perfect for measuring fan shaft sizes in tight locations. Being plastic, they are relatively durable, and the numbers are easy to read. At this price point I’m not too concerned with breaking or losing one because I have another one on back up. Measurements are accurate and perfect for out on the field.

This product is absolutely wonderful because the scale print is off, jaws don't close evenly and the depth rod hangs out the bottom an eighth inch. It would be excellent for measuring large things like plumbing pipe and car axles. I love these wonderful plastic gems so much I'm returning them so someone else can experience how wonderful they are. Oh by the way there're smooth.

good for the price

Good useful tool for quick noncritical measurements.

highly recommended, not as a replacement for precise calipers, but for when you want to quickly measure something OR measure something non-critical without scratching it. Like... watches! Love having this around. I do all my quick measurements with it.

Ordered for a specific job, these calipers, made from hard plastic, did the job perfectly. For precision setups and in-process measuring, I would choose a steel version, but for less demanding needs, these are perfect, AND as accurate as their more expensive big brothers.

These are a great value! I've been using plastic vernier calipers for some years. I have various precision calipers for transmission, differentials, disk brakes, and engines including digital, dial, and slide. But I don't need precision for most things like pipes and hoses or basic thickness measurements. The plastic calipers work great and I don't think twice about where I set these or what I use them on. The slide is firm and the scales are easy to read. The scale is typical 1/16" versus a precision caliper with a .001 scale.

Sometimes I'm pleasantly surprised by the quality of inexpensive items. Not this time. The rough sliding was quickly resolved with a bit of silicone lube - the same stuff used on Rubik's cubes. But the accuracy just isn't there. I can measure more accurately with a 50-cent wood ruler from Walmart.Calipers may be one of those things you just have to purchase in-person.