KynupDigital Caliper, 12 Inch Caliper Measuring Tool with Stainless Steel, IP54 Splash Proof Protection Design, Large LCD Screen, Easy Switch from Inch Metric Fraction (300mm)

Delivered as described.Solid, robust, 2 spare batteries, accuracy in spec limits 0.02mm.

I love the fact that it uses a 2032 3 volt Lithium ion button cell battery for extra long battery life. Many use LR44 alkaline 1.5 volt which are easily drained and require constant changing of the little button cell batteries. It has 3 measuring modes as follows, MM, Inches and a fraction mode that is very useful. Well made durable and accurate.Excellent choice at a great price point! I use it mainly for Reloading measurements that must be accurate. I also tried the fraction mode on several Allen wrenches of unknown size and it worked perfectly for that as well. Would recommend this to a friend.

I purchased two of these measuring tools. The build quality appears to be very good. I did not yet get to use them for my work. I tested them on some pieces that I know the measurements. The accuracy is good. I gave this instrument 5 stars because for its price point and its actual accuracy. I found it to be very acceptable. It has a good quality feel to it.I have seen in some reviews with some of these the measurement may not be consistent. There are factors involved such as the acceptable tolerance of the instrument, how even you place the calipers, how much pressure you exert when adjusting the calipers against the surface to be measured, and the temperature of the item to be measured. For general type of work this instrument accuracy is very acceptable. For all materials there is thermal coefficients to be considered when making precise measurements. This factor depends on the type of material to be measured.In relation to the cost of this instrument the precision is impressive. From my perspective it is very acceptable for home, and work projects. I will be using it for measuring fittings, electronic wire diameter, thickness of electrical conductors, and etc.--For example to calculate the coefficient of steel:Multiply the temperature change by 7.2 x 10-6, which is the expansion coefficient for steel. Continuing the example, you would multiply 0.0000072 by 5 to get 0.000036. Multiply the product of the expansion coefficient and the temperature increase by the original length of the steel. The coefficient of thermal expansion for steel is 0.00000645in/in/deg F.With this hand held instrument environmental temperature will also have some affect on it. This is normal.

Veramente ottimo calibro, robusto veramente ben fatto, in lega non plastica, consigliato.

Fácil de usar y si repite las medidas de lo mismo que mides aunque tarde un poco en dar el mismo valor, lo que mas me gusto es quen se prende solo cuando lo abres y te evitas precionar el boton de ON.Aunque para medir cuerdas de tornillo muy cortas y finas no es posible eria como de 1 mm en adelante

Seems good quality, is accurate and the fraction mode should be useful