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The Kynup Digital Caliper is a precision measuring tool with a 0-6 inch (150 mm) range and ultra-fine ±0.001 inch accuracy. Crafted from durable stainless steel, it features a splash-proof LCD, 3-way unit conversion (inch/mm/fraction), and four measuring modes (outer, inner, depth, step). Its smart auto power-off extends battery life, making it a reliable, professional-grade tool for jewelry, woodworking, DIY, and industrial use.







| ASIN | B0DCFM86W1 |
| Best Sellers Rank | #14,702 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #24 in Digital Calipers |
| Brand | Kynup |
| Brand Name | Kynup |
| Customer Reviews | 4.6 out of 5 stars 1,156 Reviews |
| Included Components | Case; Digital Caliper |
| Item Dimensions L x W | 9.28"L x 3.03"W |
| Item Highlight | Auto-Off Feature, Stainless Steel, Large LCD Screen, Switch from Inch/Metric/Fraction (6Inch/150MM) |
| Item Weight | 7.02 ounces |
| Manufacturer | Kynup |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Measurement Accuracy | 0.02mm |
| Model | KY-21S |
| Number of Batteries | 3 LR44 batteries required. |
| Number of Items | 1 |
| Part Number | KY-21S |
| Product Dimensions | 9.28"L x 3.03"W |
| Range | 0-150mm millimeters |
| Unit Count | 1 Count |
A**A
Nice Tool.
This is a nice tool, easy to use and accurate. It comes with a sturdy plastic case, instructions, and two extra batteries. The display and printed scales are a good size and easy to read. The dial adjuster makes small, precise measurements simple and easy. Being made of metal ensures it will outlast me. It is definitely worth the cost.
S**A
Great product presentation and quality at an unbeatable price!
Quite impressed with the value and quality of the product, especially for the fair price! The calipers are sturdy, the adjustment wheel is smooth and firm, the measurements are accurate, and the hold screw keeps your measurement type! It was certainly a change from my previous plastic cheapo, plastic calipers, but I wish that I would've done it sometime ago! These were an incredible step up, and only a small jump in price! The functionality is excellent, keeping your measurements, precise, and easy to use! The product comes cleanly wrapped in a nice box with a sturdy, hard plastic travel, and storage case! They look and feel expensive, while functioning like an expensive set also!
B**N
Surprisingly nice!
Very nice for the money. The calipers are well made and 2 extra new batteries are included. The case also houses a mini screwdriver for replacing the batteries. These calipers are very nice!
N**E
Better than expected.
Not as accurate as they claim, it just breaks down and rounds to eliminate "jitter". I bought em for knock-arounds, hate digital (trust the dials). About 2 thousanths off, well within bang-around tolerances. These are just to take with me, and for the price are worth it. Also like having multiple sets just to make sure one doesnt need re-calibrated. Heavy, oddly. Rounds to the nearest .0005 so yeah, it does pretty good for the price. Machine shop? Get dials. Seem to hold/return to zero. Above average for the price. Display is fine and they are extremely easy to use. Metric/Imperial is nice. Not a true professionals tool, but jump straight into 120$+ at the most basic. Good value? I'd say so if you want a beater pair, pick some up.
D**H
Seems good quality
I like this caliper. I like that it has fractional readings also. It’s much heavier than my Hobo Freight model and I don’t have to figure any fractions. I’m lazy like that. It’s perfect for most people. You don’t need a mitutoyo at home.
D**E
Happy with product
Had this a while now and have used it several times. Works well and comes with a nice storage box and extra batteries. I like you can switch between inches, metric, or fractions. Good caliper for the price.
S**O
Works exactly as it should.
Affordable and accurate. Great alternative to much more expensive devices. We use to measure gemstones with ease.
C**S
Quality Tool
Thus caliper surprised me, it is very well built smooth action very impressive. I would put it up against my Starrett.
M**E
Solid Caliper
Display is crisp and easy to read (it's not back lit). The travel is very smooth and precise. Feels heavy and sturdy in your hands. Amazing calipers for the price.
D**D
good clear markings.
It looks solidly built and the markings are clear. Hope the battery lasts.
J**S
Excelente material
Muy buen material me encantó
A**R
Ignore the other reviews. Inaccurate and nasty materials.
Avoid these. The measuring accuracy is poor and the build quality is even worse. They feel cheap in the hand and the materials grate on each other when moving the Jaws. I wish I saw a decent review of these before committing. I want to return them but they charge for return postage so I'll kepp them and use them for odd jobs where accuracy isn't vital.
J**E
Excellent quality and accuracy, heavy in a good way. Good purchase.
Holy smokes. This thing is amazing value. Don't change the price, don't change the product. The engineers nailed it, and the price is fair for both parties. This has substantial heft in the hand, is made of what appears to be good quality stainless steel, appears to be very accurate and sturdy without slop. It also came with a hard plastic case with adjustment screwdriver and two replacement batteries. I am pleasantly surprised with this purchase.
Trustpilot
2 months ago
1 month ago