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  2. sku: 6333624045956632
  3. SUN MCGRAW EQUIPMENT TDS-3

SUN MCGRAW EQUIPMENT COMPANY TDS-3 Dwell Tach Dwell/tach 4910-00-788-8549

4910-00-788-8549 Sun Mcgraw Equipment Company Tds-3 Vintage Dwell/tach Untested

( Brand: Sun Mcgraw Equipment Company ), ( Manufacturer Part Number: TDS-3 )

Review SUN MCGRAW EQUIPMENT COMPANY Vintage Dwell/tach Untested

Introducing the Sun McGraw TDS-3 Dwell/Tach 4910-00-788-8549, a versatile and advanced digital tachometer and dwell meter designed for aviation applications. This instrument is manufactured by Sun McGraw, a trusted name in the aerospace industry, known for producing high-quality avionics equipment.

The TDS-3 is a compact, rugged device that can be easily installed in any cockpit. Its digital display ensures clear and precise readings, making it an essential tool for pilots seeking accurate engine performance data. The tachometer function measures engine RPM, while the dwell meter function measures the length of time the ignition system provides a spark to the spark plugs.

This particular model, 4910-00-788-8549, is built to meet the stringent military standards MIL-STD-810F and MIL-STD-461F. These standards ensure that the instrument can withstand harsh environmental conditions and electromagnetic interference, making it suitable for use in military aircraft.

The TDS-3 features a backlit LCD display that is easy to read in all lighting conditions. It also includes a built-in self-test function that allows users to check the accuracy of the instrument before each flight. The device has an adjustable RPM range of 0 to 12,000 RPM, and it can measure engine dwell times as short as 0.3 milliseconds.

The Sun McGraw TDS-3 Dwell/Tach 4910-00-788-8549 is designed to operate on a wide range of voltage inputs, from 10 to 32 volts DC. It also includes a built-in temperature sensor that monitors the instrument's internal temperature and alerts users if it gets too hot.

This avionics instrument is designed to provide pilots with critical engine performance data, helping ensure safe and efficient operation of their aircraft. Its rugged construction, advanced features, and military-grade specifications make it an indispensable tool for aviators in various industries, including military, commercial, and general aviation.

The Sun McGraw TDS-3 Dwell/Tach 4910-00-788-8549 is a military-grade tachometer and dwell meter designed for use in aviation applications. This device measures engine RPM and dwell angle to ensure optimal engine performance. Below are some pros and cons of purchasing this product.

Pros:

1. Military-grade design: The TDS-3 is built to meet the rigorous requirements of military aviation applications, ensuring high reliability and durability.

2. Wide measurement range: The tachometer can measure RPM from 0 to 12,000, making it suitable for use with a wide range of engines.

3. Dwell measurement: The device can also measure the dwell angle, which is an important parameter in aviation engine performance.

4. Rugged construction: The TDS-3 is designed to withstand harsh environments, making it ideal for use in aviation applications where equipment is often exposed to extreme temperatures and vibrations.

5. Easy-to-read display: The large, backlit display makes it easy to read the measurement data, even in low-light conditions.

Cons:

1. High cost: The TDS-3 is a specialized, military-grade device, and its cost reflects its advanced features and rugged construction.

2. Complex setup: The device may require some technical expertise to install and configure, which could be a challenge for some users.

3. Limited compatibility: The TDS-3 is specifically designed for use in aviation applications and may not be compatible with other types of engines or vehicles.

4. Bulkier size: Compared to commercial-grade tachometers, the TDS-3 is larger and heavier, which could be a disadvantage for some users.

In conclusion, the Sun McGraw TDS-3 Dwell/Tach 4910-00-788-8549 is a high-performance, military-grade tachometer and dwell meter designed for use in aviation applications. Its wide measurement range, rugged construction, and easy-to-read display make it an ideal choice for those who require the highest level of accuracy and reliability. However, its high cost, complex setup, limited compatibility, and bulkier size may be disadvantages for some users. Ultimately, the decision to purchase the TDS-3 depends on the specific requirements of the application and the user's budget and technical expertise.

Recommendation:

If you are in the aviation industry and require a high-performance, military-grade tachometer and dwell meter, the Sun McGraw TDS-3 Dwell/Tach 4910-00-788-8549 is an excellent choice. Its advanced features, rugged construction, and wide measurement range make it an ideal solution for ensuring optimal engine performance in harsh environments. However, if you are looking for a more affordable, commercial-grade tachometer, there may be other options on the market that better suit your needs. I would recommend carefully evaluating your requirements and budget before making a purchase decision.

Details:

Please see pictures. The plastic box is not in perfect shape. This Dwell/ Tach meter has not been tested I have no idea on how to test. This tool, with the brand name TDS-3, appears to be a specialized piece of Equipment designed for automotive diagnostic purposes.

The Vintage SUN McGraw Equipment Company Dwell/Tach 4910-00-788-8549 is an untested diagnostic service tool manufactured by. It was being used by old mechanic before he past away.

specifications diagitools:

  • brand: Sun Mcgraw Equipment Company
  • mpn: Tds-3

seller diagitools:

  • city: McMinnville, Oregon
  • rating: 100.0%
  • # reviews: 558

payments diagitools:

  • wallet: Google-pay
  • credit card: Discover
  • other

returns diagitools:

  • paid by: Buyer
  • time: 30 Days
  • policy: Returns Accepted

offer diagitools:

  • quantity: 1
  • best offers: True
  • options: Ship-to-home
  • started: February 27, 2026
  • availability: In Stock
  • sold: 0

shipping diagitools:

  • transit: 7-11 Days
  • service: USPS Ground Advantage
  • type: Fixed
  • class: Standard
  • cost: $11.95
  • carrier: USPS

general diagitools:

  • condition: Used
  • Automotive Tools Supplies > Diagnostic Service Tools > Other Diagnostic Service Tools
category: auto parts > tools supplies > diagnostic service tools, sku: 6333624045956632,

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