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The Promate InstaScale-50 (InstaScale-50.White) is a handheld digital luggage scale reading up to 50kg in 50g steps. It uses a high-precision sensor system, shows results on a backlit LCD and switches between kilograms and pounds. The whole unit measures 135 x 95 x 30mm and weighs 123g.
The Promate InstaScale-50 (InstaScale-50.White) is a handheld digital luggage scale reading up to 50kg in 50g steps. It uses a high-precision sensor system, shows results on a backlit LCD and switches between kilograms and pounds. The whole unit measures 135 x 95 x 30mm and weighs 123g.

The sensor resolves weight to a 50g division, which is fine enough to tell you whether a bag is genuinely under an airline limit or sitting just over it. Coarser scales round to half a kilo, and that rounding is exactly where the uncertainty lies when a case is close to the line.

The sensor resolves weight to a 50g division, which is fine enough to tell you whether a bag is genuinely under an airline limit or sitting just over it. Coarser scales round to half a kilo, and that rounding is exactly where the uncertainty lies when a case is close to the line.

Maximum capacity is 50kg, comfortably above the checked-baggage allowance on most airlines. That headroom means you can weigh an overloaded case, a bulk parcel or two smaller bags hooked together without the scale topping out, which is where lower-capacity travel scales become useless.
Maximum capacity is 50kg, comfortably above the checked-baggage allowance on most airlines. That headroom means you can weigh an overloaded case, a bulk parcel or two smaller bags hooked together without the scale topping out, which is where lower-capacity travel scales become useless.


The display toggles between kg and lb. Airlines outside the metric world quote allowances in pounds, and doing the conversion mentally at a check-in counter is where mistakes happen. Switching the unit to match whatever the airline printed on your ticket removes the arithmetic entirely.

The display toggles between kg and lb. Airlines outside the metric world quote allowances in pounds, and doing the conversion mentally at a check-in counter is where mistakes happen. Switching the unit to match whatever the airline printed on your ticket removes the arithmetic entirely.

The readout is a TN LCD measuring 23 x 19mm with a backlight. The backlight is what makes the scale usable in a dim hotel room at five in the morning or in the boot of a car at night, which is realistically when most people weigh a bag before a flight.
The readout is a TN LCD measuring 23 x 19mm with a backlight. The backlight is what makes the scale usable in a dim hotel room at five in the morning or in the boot of a car at night, which is realistically when most people weigh a bag before a flight.


Power comes from two CR2032 coin cells rated 6.0V and 210mAh each, with the scale drawing 120mW. Coin cells hold their charge in storage for years, which suits a device used a handful of times a year, and replacements are available in any supermarket rather than needing a proprietary pack.

Power comes from two CR2032 coin cells rated 6.0V and 210mAh each, with the scale drawing 120mW. Coin cells hold their charge in storage for years, which suits a device used a handful of times a year, and replacements are available in any supermarket rather than needing a proprietary pack.

At 135 x 95 x 30mm and 123g, the InstaScale-50 fits in a carry-on pocket without noticeably adding weight to the bag it is measuring. Promate quotes a total usage life of 50,000 weighings, which is far beyond what any traveller will reach across the life of the device.
At 135 x 95 x 30mm and 123g, the InstaScale-50 fits in a carry-on pocket without noticeably adding weight to the bag it is measuring. Promate quotes a total usage life of 50,000 weighings, which is far beyond what any traveller will reach across the life of the device.

Everything you need to know about this product
It reads up to a maximum capacity of 50kg, which is well above most checked-baggage allowances.
The high-precision sensor resolves weight in 50g divisions.
Yes, the display switches between kilograms and pounds to match whichever unit your airline uses.
Yes, the 23 x 19mm TN LCD is backlit, so it stays readable in a dim room or at night.
It runs on two CR2032 coin cells, each rated at 6.0V and 210mAh.
It measures 135 x 95 x 30mm and weighs 123g, so it packs easily into hand luggage.
Promate quotes a total usage life of 50,000 weighings for the unit.
The InstaScale-50 has an input rating of 120mW, which is why coin cells are sufficient to run it.
The 50kg capacity leaves enough headroom to weigh two smaller bags hooked together in a single lift.
This is the white finish of the InstaScale-50, sold under the model code InstaScale-50.White.
AI-Generated Content: These FAQs are generated by an automated AI system and may contain inaccuracies or omissions. Evetech makes no warranties, express or implied, regarding their completeness or reliability. For definitive information, please refer to the manufacturer's official specifications.









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