SpokeCalc DTM & DTM-Pro

SPOKE TENSION METERS

DTM is a digital precision tension meter designed to ensure accurate and consistent wheel tensioning. With its large digital display, values are more stable and easier to read.

389,99€

*in Stock! Dispatches in two days.

Total Wheelbuilding App – Your tension meter is ready to work inside the app. Choose a membership to unlock full potential.

Monthly access to core tools: tension app, spoke calculator, and component manager.
Full-year access, plus Clients & Workshop for tracking service history.

Discover all features

Features

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Large and easy to read digital screen on both models.

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Quality CNC machined alloy main body.

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Scan QR code to get online tension tables and import the tool.

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Wireless data transmittion to the app

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Needle bearings on the pin to ensure repeatable readings.

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Protective casing to store the tool after every use.

DTM / DTM-PRO

Choose the Right Tool for the Job.

Not sure which tension meter fits your workflow best? Both models feature a large, high-contrast digital display for precise readings, along with the same high-quality construction and measurement accuracy.

The only difference is connectivity.

DTM

Reliable digital gauge without wireless connectivity.

DTM-Pro

Bluetooth-enabled for hands-free tensioning & direct app integration.

Specifications & Manual

Specifications
Tension tables
Manual

SpokeCalc DTM

  • Type: Digital
  • Connectivity: None
  • Unit: mm / inch
  • Resolution: 0.01 mm
  • Measuring range: 0 - 12.7 mm
  • Temperature range: -10°C to +40°C
  • Battery: 1 x LR44 (supplied)

Recommended for:

Traditional builders who prefer a standalone device.

SpokeCalc DTM-Pro

  • Type: Digital
  • Connectivity: None
  • Unit: mm / inch
  • Resolution: 0.01 mm
  • Measuring range: 0 - 12.5 mm
  • Temperature range: -10°C to +40°C
  • Battery: 1 x CR2032 (supplied)

Recommended for:

Advanced users who desire wireless app integration for a streamlined workflow.

NOTE: Each tool is serially numbered with the identifier that can be found on the back of the dial gauge and in the enclosed manual.

Tension tables

  • Each tool is serially numbered and individually calibrated.
  • Tension tables are available online for reference.
  • Different tension tables can be added per request.

Six tension charts to cover 90% of every builder's needs!

Spoke Type Dimension Compares to
Alpina Ultralite Round 1.50 mm Sapim Laser, DT Revolution
Alpina Basiclite Round 1.80 mm Sapim Race, DT Competition
Alpina One Round 2.00 mm Sapim Leader, DT Champion
Alpina Spark Round 2.00 / 2.30 mm Sapim Strong, DT Alpine
Alpina Ultralite Aero Bladed 2.20 / 0.95 mm Sapim CX-Ray, DT Aerolite
Alpina Extralite Aero Bladed 2.30 / 1.20 mm Sapim CX-Sprint, DT Aero Comp

NOTE: Contact me at [email protected] to get a conversion chart for Sapim or DT spokes instead.

App users

Your tension meter already awaits you inside the App Spokecalc. Import it to your list by following instructions:

  1. Log in to SpokeCalc and navigate to the Tools page. Tap "Add New."
  2. Select SpokeCalc as the brand and DTM or DTM-Pro as the model.
  3. Enter your tool’s serial number and wait for the confirmation icon.
  4. (Optional) Enable the checkbox to import tension tables with the tool.
  5. Tap "Confirm" to complete the setup.
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NOTE: Tension tables can be edited and re-imported at any time.

Non-App users

If you are not using the SpokeCalc app, follow these steps to access your tool’s documentation:

  1. Scan the QR code on the back of the dial gauge to access the online manual, or go to the Manual Tab on the right.
  2. Navigate to the tension meter menu and tap the icon. Enter your tool’s serial number to be redirected to a page with individual tension tables for your tool.
  3. (Optional) The online document is preformatted in A4 and ready for printing. To save it as a PDF, open Print (Ctrl+P / Cmd+P) and select Save as PDF.
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Documentation

SpokeCalc DTM tension meter (multilingual)

SpokeCalc DTM-Pro tension meter (multilingual)

Holex HCT Bluetooth Dial Indicator (multilingual)

NOTE: Tension tables of your tool can be accessed within the online Manual page. Search for a tension meter icon in the side menu and enter the tool's serial number.

APP INTEGRATION

Smarter Way to Build Wheels.

DTM-Pro seamlessly integrates with the Tension App, offering hands-free tensioning and real-time tracking. Your tool already awaits you inside the app alongside tension tables, ready to enhance your workflow.

#tensionapp #addcomponents #savewheels #sharefiles  #addclients

App

DTM

*Whether you choose DTM or DTM-Pro, both models work with the app to help you build a fully digital workflow.

Frequently asked questions

If you don't find the answer to your question, please ask at [email protected].

Product questions

What is the difference between DTM and DTM-Pro?
The main difference between the DTM and DTM-Pro models is connectivity. The DTM-Pro is designed for seamless, hands-free work, offering wireless data transmission to the app and live charting. While the DTM model doesn't have these wireless features, it can still be used with the Tension App inside App SpokeCalc for tension measurement and other functions.
Can custom tension tables be ordered on demand?
The starter pack includes six (6) spoke tension tables, covering 90%—or more—of every builder’s needs. It includes a range of round spokes, from ultralight models to e-bike-rated options, plus the two most common bladed spokes.
That said, custom tension charts can be created, and the device can be calibrated for specific spokes, including Sapim and DT Swiss models. If you’d like to adjust the default spoke list to better fit your needs, contact me at [email protected]. Additional spokes may be added at cost.
Why do both models come with a digital screen instead of one being classic, analogue?
While an analogue dial gauge gives the tool a retro, elegant look, my experience has shown that a large, high-contrast digital screen provides a clearer tension reading without requiring extra focus on the gauge. Digital screens also have a slight lag, which helps stabilize readings and prevents abrupt deviations—yet they remain just as accurate. This results in more consistent, repeatable measurements, making tensioning more efficient.
Is the digital gauge on both models the same?
No. The budget-friendly version features a simple yet highly visible, high-contrast screen that displays large readings. However, it does not offer any connectivity to a PC, tablet, or smartphone. In contrast, the premium version includes a Bluetooth-enabled dial gauge that seamlessly transmits data to the app with the press of the Data button. Additionally, the premium model’s gauge is sleeker and lighter.
Do I need a smartphone to use DTM-Pro?
No, you don’t need a smartphone in the workshop to use either version of the tool. However, if you want to wirelessly transmit data with the premium DTM-Pro tension meter, you’ll need a receiving device (tablet, PC, or smartphone) that supports Bluetooth.
Can I upgrade my DTM to DTM-Pro later?
Yes! Both models share the same construction and components, with the only difference being the type of digital gauge. If you’re interested in upgrading to the wireless premium dial gauge, contact [email protected] for details on the swap and recalibration. You can also upgrade later once you’re more familiar with the device.

App & Integration

Does DTM still work with the app?
Yes! Both models are fully compatible with the app. The only difference is how they transmit data. The standard DTM model requires manual entry of tension values, while the DTM-Pro can send readings wirelessly via Bluetooth. Regardless of the model, you can use the app to log, analyze, and manage your tension data efficiently.
Thinking of using the non-wireless DTM while still working efficiently with the app? A small Bluetooth-supported number pad (like a num pad) connected to your phone or PC can help you take readings with ease, minimizing manual input effort.
What features does the app offer for DTM & DTM-Pro users?
Both models are fully compatible with the Tension app inside the SpokeCalc software. You can generate detailed visual charts, including radar charts, and get a complete summary of your tensioning process with key performance metrics.
Additionally, the app includes pre-saved tension tables, making it easy to get started. Simply import your tool using its serial number for quick access to the correct data.
Can I buy the app membership separately?
Of course. Feel free to try the App SpokeCalc any time and select either monthly or anually based memberships. In offseason, you can also skip a month or two and then renew membership once the season kicks off and you are back to wheelbuilding.
What’s included in the App SpokeCalc memberships?
SpokeCalc is available in three tier-based membership programs. The Season Pro monthly membership offers all the essential tools for a wheel builder, including the spoke calculator, tension app, saving components with dimensions, adding tools, creating wheels, and more.
Upgrading to Master Builder unlocks the Workshop module, which allows you to create and record service activities for your builds, as well as add clients.
The Marketplace module available with the Master Builder plan lets you create products from your wheels, use a quick quotation maker, and handle invoicing.
Can I use DTM-Pro with any wheelbuilding software?
It depends on the software. If the program — whether it's an Excel sheet, a web-based app, or another tool — supports content-editable fields like input boxes, the Tension Meter will transmit data as if it were a keyboard. This allows seamless data entry without additional steps.

Shipping & Policy

Where do you ship, and how long does it take?
We currently ship to a list of supported countries, which can be found in the Country dropdown menu on the Checkout page, where shipping costs are calculated. New countries will be added over time, so if you don't see your country listed, please feel free to contact me at [email protected] for shipping information to your area.
What warranty do DTM and DTM-Pro come with?
Warranty conditions are stated on the original invoice and includes 2 year period. To claim warranty service or inquire for a spare part, write to [email protected] with full description of the problem, proof of purchase and serial number (identifier) of the tool.
Not covered by warranty:
  • Device modifications or altercations.
  • Damage due to improper handling or misuse.
  • Normal wear and tear produced by regular use
What if I have an issue with my tool?
Feel free to contact me on [email protected] regarding any question or assistance needed about the tool.