Scale On Balance MTT-100
Digital scales
by On Balance
On Balance MTT-100: A Pocket-Sized Milligram Scale Built for Precision
The On Balance MTT-100 is a compact milligram scale that reads down to 0.005g — accurate enough to weigh concentrates, resins, and extracts with genuine confidence. Measuring just 10.9 × 7.5 × 2.5cm and running on two AAA batteries, it slips into a pocket or bag without fuss. If you need reliable sub-milligram readings without spending a fortune, this is the scale we hand people in the shop.
Why the On Balance MTT-100 Milligram Scale Stands Out
Most pocket scales read to 0.01g or 0.1g. The MTT-100 halves that to 0.005g, which matters the moment you're working with anything where a fraction of a gram changes the equation. We've sold digital pocket scales for over two decades, and the number one complaint with cheaper models is the same: they bounce between readings or simply ignore anything under half a gram. The MTT-100 doesn't have that problem.
The build feels solid for its size — there's a satisfying weight when you pick it up, and the flip-open lid clicks into place rather than flopping about. That lid doubles as a weighing tray, which is a clever touch. No hunting for a spare dish, no balancing a scrap of paper on the platform. Just flip, tare, and weigh. The backlit screen is angled slightly upward, so you're not craning your neck or casting a shadow over the display. Small detail, big difference when you're measuring 0.015g of something and need to read the number clearly.
One honest limitation: the 100g capacity means this isn't the scale for weighing out large quantities. If you regularly need to measure 200g or more, you'll want a second scale with a higher ceiling. But for anything under 100g — and especially for tiny amounts in the sub-gram range — the MTT-100 is the best milligram scale in its price bracket.
Specifications for the On Balance MTT-100 Digital Scale
| Spec | Value |
|---|---|
| Brand | On Balance |
| Model | MTT-100 |
| SKU | HS1188 |
| Capacity | 100g |
| Precision | 0.005g |
| Dimensions | 10.9 × 7.5 × 2.5 cm |
| Weighing units | g, oz, ozt, dwt, ct, gn |
| Display | Backlit, angled |
| Power | 2 × AAA batteries |
| Controls | 4-button system |
| Extra feature | Lid usable as weighing bowl |
Six Weighing Units on One Milligram Scale
The MTT-100 lets you toggle between grams (g), ounces (oz), troy ounces (ozt), pennyweight (dwt), carats (ct), and grains (gn). That's six units accessible through the button interface without any menu diving. Most people stick with grams, but if you're weighing gemstones in carats or working in grains for traditional apothecary measurements, you won't need a conversion chart.
How to Use the On Balance MTT-100
- Open the lid and place the scale on a flat, stable surface. Uneven tables or soft surfaces throw off readings — a kitchen counter or desk works well.
- Press the power button. Wait for the display to show 0.000g. If you're using the scale for the first time, give it 10–15 seconds to stabilise.
- If you want to use the lid as a weighing bowl, flip it over and place it on the platform. Press the tare button to zero out the lid's weight.
- Select your preferred weighing unit by pressing the mode button. Cycle through g, oz, ozt, dwt, ct, and gn until you land on the one you need.
- Place your substance on the platform or in the lid-bowl. Wait 2–3 seconds for the reading to settle — the backlit display will show your measurement to 0.005g precision.
- To weigh a second item separately, press tare again to reset to zero, then add the next item.
- When finished, press and hold the power button to switch off. Close the lid to protect the weighing platform.
Why Accurate Weighing Matters
We get asked "does it really matter if I'm off by a tenth of a gram?" at least a few times a week. The short answer: yes, depending on what you're weighing. According to Truweigh International, the first step in safe tapering is to crush pills to powder and weigh accurately — even a 10% reduction in dosage needs to be measured, not guessed. That's the difference between a controlled adjustment and a stab in the dark.
For microdosing, the margins are even tighter. A guide published by Azarius on weighing and dosing psychedelics safely notes that knowing exactly how much you're taking is critical to a positive and safe experience. Eyeballing doesn't cut it when the difference between a microdose and a noticeable dose can be 0.05g. The MTT-100's 0.005g precision gives you the resolution to measure those amounts with real accuracy, not rough approximation.
And for anyone tapering medication, the same Truweigh source recommends reducing by smaller 5% increments toward the end of the process to minimise withdrawal severity. You simply cannot achieve that kind of precision without a milligram-capable scale. A kitchen scale reading to the nearest gram is off by a factor of 200 at this level.
On Balance MTT-100 vs Other Pocket Scales
| Feature | MTT-100 | Typical 0.01g pocket scale | Kitchen scale |
|---|---|---|---|
| Precision | 0.005g | 0.01g | 1g |
| Capacity | 100g | 100–500g | 5,000g |
| Backlit display | Yes, angled | Sometimes | Rarely |
| Weighing units | 6 | 2–4 | 2–3 |
| Portability | Pocket-sized (10.9cm) | Pocket-sized | Countertop only |
| Lid as bowl | Yes | Rarely | No |
| Best for | Sub-gram precision work | General small weighing | Cooking, large amounts |
Complete your setup with calibration weights to keep the MTT-100 reading true over time — a 100g calibration weight lets you verify accuracy in seconds. If you also work with larger quantities, pair this with a scale that handles 200g+ so you're covered at both ends.
Tips from 25 Years
We've been selling scales since 1999, and the mistakes we see are almost always the same. First: people weigh on soft surfaces. A sofa cushion, a bed, even a mousepad — all of these absorb vibration unevenly and give you unreliable numbers. Put the MTT-100 on a hard, flat surface every time. Second: draughts. An open window or a fan blowing across the platform can shift a 0.005g reading. Close the window, turn off the fan, then weigh.
Third — and this one catches people out — fingerprints add weight. If you're measuring sub-0.1g amounts, the oils from your fingers on the weighing surface can actually register. Use the lid-bowl or a small piece of weighing paper, tare it, and keep your fingers off the platform. It sounds fussy, but at 0.005g resolution, these details matter.
Frequently Asked Questions
How accurate is the On Balance MTT-100?
The MTT-100 reads to 0.005g with a maximum capacity of 100g. That's twice the resolution of a standard 0.01g pocket scale, making it suitable for weighing amounts as small as 0.01–0.02g with meaningful precision.
What batteries does the On Balance MTT-100 use?
Two AAA batteries. They're widely available and cheap to replace. The scale has a long battery life thanks to its auto-off function — leave it idle and it powers down to conserve charge.
Can I use the lid as a weighing tray?
Yes. Flip the lid over, place it on the platform, press tare to zero it out, and add your substance. It works well for powders and small granules that might otherwise roll off the flat platform.
How do I change the weighing units on the MTT-100?
Press the mode button to cycle through grams (g), ounces (oz), troy ounces (ozt), pennyweight (dwt), carats (ct), and grains (gn). The current unit is shown on the display. It remembers your last selection when powered off.
Is a 0.005g scale good enough for microdosing?
For most microdosing purposes, 0.005g precision is more than adequate. Typical microdose ranges sit between 0.05g and 0.30g, so the MTT-100 gives you resolution well within that window — roughly 10–60 increments across the range.
Do I need to calibrate the On Balance MTT-100?
Periodic calibration keeps any digital scale accurate. Use a known calibration weight (100g is ideal for this model), place it on the platform, and follow the calibration function in the button menu. We'd suggest doing this every few months or after transporting the scale.
Why does my scale give different readings each time?
Almost always an environmental issue. Check for draughts, uneven surfaces, or vibrations from nearby appliances. Place the MTT-100 on a hard, flat, stable surface away from airflow. If readings still fluctuate, recalibrate with a known weight.
Last updated: April 2026
