Tiny Tach Gauges

Tiny Tach Gauges: Precision RPM and Hour Metering in One Compact Unit

When it comes to monitoring engine speed and runtime in a single, no-fuss package, few names carry more credibility than Tiny Tach. Made by Design Technology, Inc., the Tiny-Tach™ line has been the go-to choice for engine operators who need accurate, reliable data without the complexity of traditional analog gauges. Whether you run a lawn tractor, a marine outboard, a diesel generator, or anything in between, Tiny Tach's gauges are engineered to deliver real-world performance day after day.

A Legacy Built on Simplicity and Accuracy

Design Technology has been engineering and manufacturing the original Tiny-Tach™ since 1993, and the brand has grown to become a globally recognized standard in compact tachometry. Today, Tiny-Tach gauges are sold in 50+ countries to individuals, OEM manufacturers, and distribution companies worldwide — a testament to how well these instruments perform across industries and applications.

What sets Tiny Tach apart in the gauges category is its ingenious 2-in-1 design: every unit functions as both a tachometer and an hour meter simultaneously. Rather than installing separate instruments, a single Tiny-Tach gauge gives you a real-time RPM readout alongside a running log of total engine hours — two of the most critical data points for any engine owner.

The Tiny Tach Product Lineup

The Tiny-Tach family includes models designed to cover virtually every engine type and use case:

• Standard Tiny-Tach™ (TT2A): The flagship model, adjustable from 1 spark per 2 revolutions to 8 sparks per revolution, so it works on most gasoline engines including fuel-injected configurations. It measures RPM up to 19,990 with a half-second update time for near-instant readings. A non-resettable hour meter tracks total engine runtime, while a resettable job timer supports maintenance recordkeeping.
• Commercial Tiny-Tach™: A step up for racers and power users who need the ultimate in engine data tracking. It adds features like maximum RPM recall and programmable service reminders — ideal for engines that see heavy use cycles.
• Diesel Tiny-Tach™: Purpose-built for diesel engines, this model uses a transducer on the fuel line for accurate RPM readings regardless of cylinder count. It includes a lighted display and four timers: total engine hours, a resettable job timer, and two configurable service reminder alarms set in programmable hour intervals.
• Marine Tiny-Tach™: A water-resistant variant tuned for most gasoline-powered outboard marine engines, offering the same core feature set as the TT2A in a build ready for the elements.

Built-In Features That Make a Real Difference

Across the lineup, Tiny Tach gauges share a set of design philosophies that make them stand out from generic alternatives. The coax cable signal system transmits RPM data without EMF interference, ensuring clean and accurate readings even in electrically noisy engine bays. Each unit is potted — meaning the internal electronics are sealed in a protective compound — to guard against moisture and vibration damage. Installation requires no external power source; simply wrap the antenna wire around the spark plug wire and the unit is ready to go. The built-in lithium battery is rated for 5+ years of life, making these truly set-it-and-forget-it gauges.

For operators who need flexibility, custom cable lengths from 7 to 20 feet are available, and the entire line can be customized for specialized engine applications upon request.

Who Uses Tiny Tach Gauges?

The versatility of Tiny Tach gauges makes them a natural fit for a remarkably wide range of applications: lawn mowers, tractors, motorcycles, go-karts, snowmobiles, generators, chainsaws, trimmers, blowers, dirt bikes, golf carts, and marine outboards all benefit from the real-time RPM and hour tracking these instruments provide. If it has a spark plug wire, there's likely a Tiny Tach gauge built for it.