Calculated Industries 4087 Machinist Calc

Calculated Industries

Machinist Calculator With Math and Reference Tool 4087, Calculated Industries

Advanced Machining Math and Reference Tool For Efficiency-Minded Machinists, Setters, Tool and Die Makers, Supervisors, Shop Owners.

Calculated Industries machinist calculator is ideal for machining pros and shop owners who want to increase productivity and profits in the design, layout and set-up stages of production and reduce wear and tear on costly cutting tools.

The Machinist Calculator Pro is the first dedicated handheld machining math and reference tool to provide a complete assortment of machine shop solutions. It has more complete Thread data than the Machinery's Handbook, including step-saving Thread and Drill Size chart look-ups, speeds and feeds, right triangle solutions, bolt patterns and much more.

Spend more time machining and less time looking up specs and data in books, on charts or in computer programs.

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Advanced Machining Calculator with Math and Reference Tool

The Machinist Calc Pro Combines All The Most-Needed Machining Calculations With Step-Saving Chart Look-Ups, Speeds And Feeds, Right Triangle Solutions, Trig Functions, Bolt Patterns, And Much More All Built Into A Portable, Rugged And Cost-Effective Handheld Calulator.

Quick, Accurate Solutions in the Shop

This machinist calculator has fast, precise solutions for your everyday machining calculations built into a shop-tough and cost-effective handheld calculator. It offers more complete thread data than the Machinery's Handbook, including step-saving thread and drill size chart look-ups, speeds and feeds, right triangle solutions, bolt patterns and much more. It also has a drill point function where you can enter the cutting angle and drill size to calculate the drill point cut depth.

Built-in functions include calculations for milling, turning and drilling (including cutting speed, spindle speed, cutting feed, feed per tooth/chip load, and more); bolt pattern hole layouts; 3-wire measurements; and trigonometric functions. Additionally, you can enter numeric, fractional, and metric thread sizes and drill sizes to display tap, roll tap, close and free fit drill sizes plus pitch, and major and minor diameters.

It also works as a standard math calculator, converts between U.S. and Metric Units, Feet-inch-fractions to 1/64ths, decimal inches and mils, meters, centimeters, millimeters, pounds, tons, grams, kilograms and metric tons, area, volume and weight.

Dedicated Functions:

  • Speeds and Feeds - Calculate for Milling, Turning and Drilling; Spindle Speed (RPM), Feed Rate (IPM), Cut Speed, Cut Feed, Feed per Tooth, Number of Teeth and Radial Chip Thinning adjustment factor
  • Thread Size - Enter numeric, fractional or metric thread sizes and display tap, roll tap, close and free fit drill sizes. Display pitch, major and minor diameters
  • Drill Point - Enter the cutting angle and Drill Size and calculate the Drill Point cut depth
  • Drill Size - Enter numeric, letter, fractional or metric Drill Size and display the closest fitting Drill Size and scroll through available drill sizes
  • 3-Wire Measure - Enter Wire Size (or use calculated Best Wire size) and 3-Wire Measurement to calculate pitch diameter
  • Trig Functions - Sine, Cosine, Tangent, Arcsine, Arccosine, Arctangent
  • Right Triangle Math - Enter, calculate Angle, Hypotenuse, Opposite and Adjacent side lengths

Additional Features:

  • Thread Classification Tables - U.S. Internal (3) 1B, 2B, 3B -> External (3) 1A, 2A, 3A
  • Metric Internal (14) 3G-9G and 3H-9H - External (28) 3g-9g, 3h-9h, 3e-9e, 3f-9f
  • U.S. and Metric Unit Entries and Conversions - Decimal Inches/mils, Feet-Inch-Fractions, m, mm, cm, Area, Volume and Weight
  • Works as a Standard Calculator

User Reviews

User: J. Douglas Bowman, HTEC Director of Vincennes University from Vincennes, Indiana
User Rating: ★★★★★
I have found the Machinist Calc Pro to be an ideal machinist calculator for the machinist on the shop floor. In a matter of seconds I can easily do everything from calculate speeds and feeds data and determine tap drill sizes, to working trig problems. And jumping between inch and metric is a breeze. It is also ideal for CNC programming, so I encourage everyone that I train to add this calculator to their tool box in order to save time and be more productive.


User: Clive Fouche
User Rating: ★★★★★
I have only just got my head around most of the features available on this device and in the short time I have been using it I have wondered how I managed without it. The threading data alone has proved most useful and has negated many wasted trips across the shop floor to look at charts. The Zeus book has become all but redundant however Machinery's Handbook still has its place. The trig functions have proved their worth as have the speed and feed calculations. I have read that one of the shortcomings of this calculator is the lack of material data relating to cutting speeds but with new cutting tools coming out a lot of this information would be redundant in no time. I have used this calculator for turning, milling, drilling, reaming and grinding and all these processes require different parameters that are easley handled. This calculator has proved its worth in the time I have had it.


User: Rex D. Banet from Jeffersonville, IN
User Rating: ★★★★★
This Calculator is extremely useful and user friendly. I purchased a total of 8 for our Toolmakers and most have had the trade for 25 + years and are impressed and continually use the calculators.


User: R Blocker, machinst from Spokane, Wa
User Rating: ★★★★★
I will say this is the best set-up calulator on the market today. 25 years as a machinist,The Machinist Calc Pro has paid for itself in the first week . NO KIDDING


User: Irish Pirate
User Rating: ★★★★★
I was a little skeptical about spending $60 on a shop calculator, but this is well worth the money. It's a easy to use machinist calculator in a protective case. This thing does everything; general calculation, feeds and speeds, major/minor diameter tolerances, percentages of thread engagement, bolt patterns, area/circumference of circles, volume... and it has a full drill/tap chart which is more useful than I expected it to be (drills from .005" to 3" if I remember correctly). It easily converts measurements between fractional/decimal inches and metric. My one and only complaint is that it doesn't do pipe taps.


User: Scott Rackley, Tool Maker, Tool Designer from Chattanooga, TN
User Rating: ★★★★★
I design tools for a major corporation. I use this calculator every day. Once you learn all the tricks, calculations are a breeze. Recommended for all tool makers, machinists, and apprentices.


User: TheRainDoctor
User Rating: ★★★★★
There's a little bit of a learning curve for the more advanced functions but the basics like fraction conversion, thread specs, and feeds and speeds are pretty easy and useful quite quickly. The keypad seems to sometimes activate other ones around the button you actually pushed occasionally, but other than that it seems to be holding up just fine in a machine shop environment. It's worth it just for the threading specs and mm to inches button, let alone all the other functions.


User: Brian Hebert, lead machinist of ATI from Pacific MO.
User Rating: ★★★★★
I had the chance to handle one of these at IMTS 2014 on Tues. It is still my favorite calculator. I am currently using the machinist calc pro and I can't wait to get a pro2.


User: Paul A. Bonyak
User Rating: ★★★★
This calculator does all calculations involved in conventional machining including pre-programmed standards for tap, drill and threads. It does not however have recommended cutting speeds as noted by other reviewers. So it's a good idea to have a machinery handbook or ready reference handy for this as well as if you need info on the aforementioned standards. If you're a design engineer or into prototyping you'll probably need at least an engineer's advanced graphing calculator or appropriate software for your laptop. This is of limited value for calculations of complex geometries. There is a newer version out now which does have material data-cutting speeds and I would most likely rate that a 5. For what it does it's a handy tool.


A Machinist for 30 Years
User: Howard Burkham, CNC Machinist/Toolmaker of PCC Aerostructures from Arlington, TX
User Rating: ★★★★★
Love this calculator!
Us old-schoolers have trig books, various feed/speed sliders from tool companies, etc.
This calculator takes my volumes of notes and notebooks out of my toolbox!