Timemore Researched
Black Mirror Basic 2
Acaia-style 0.1g performance and a fast refresh for less than half the price.
0.1 g on a budgetEspresso & pour-over
Maestri House S1 Air Ultra-Slim Espresso Scale
A slim, rechargeable 0.1 g scale small enough to sit on an espresso machine's drip tray, with an auto-tare espresso mode.
ResearchedEspresso on a drip tray0.1 g on a budget
8.5
BrewSift Score
Excellent
$39.99
Approximate — verify the latest price
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Should you buy it?
Buy it if
- Espresso on a drip tray
- 0.1 g on a budget
- Fits on most drip trays
- Auto-tare espresso mode with auto timer
Skip it if
- Small platform for a pour-over server
- Only about 100 ratings so far
- Owners say not to treat the sealed top as waterproof
Not for you? Consider the Timemore Black Mirror Basic 2 — or see all coffee scales .
The verdict
The S1 Air is 16 mm tall with a 95 × 100 mm platform, which is what lets it fit under a portafilter on most drip trays, the exact spot where a pour-over scale will not go. Its espresso mode tares when the cup goes on and starts the timer with the shot, and a USB-C battery and a silicone heat pad come with it. It reads 0.1 g, and it is rated 4.3 from just over 100 ratings, so its track record is still short.
BrewSift Score breakdown
Scored across the dimensions that matter for scales. The overall is a weighted average — see the formula.
Accuracy8.6
Responsiveness8.4
Features8.2
Build quality7.8
Value9.2
Pros & cons
What we like
- Fits on most drip trays
- Auto-tare espresso mode with auto timer
- USB-C rechargeable
Watch-outs
- Small platform for a pour-over server
- Only about 100 ratings so far
- Owners say not to treat the sealed top as waterproof
Specifications
- Resolution
- 0.1 g (maker-stated)
- Capacity
- 2,000 g (maker-stated)
- Size
- 95 × 100 × 16 mm (3.74 × 3.93 × 0.63 in, maker-stated)
- Modes
- Espresso (auto tare + timer), Pour-over, Manual (maker-stated)
- Battery
- 480 mAh, USB-C (maker-stated)
What owners say
Amazon owners average 4.3 stars across 104 ratings with 400+ bought in the past month; they describe it as well built and accurate, and one owner notes it is splash-proof on top but not waterproof.
Complete your setup
The gear that pairs with the S1 Air Ultra-Slim Espresso Scale to make a complete, working setup.
Add a grinder
Timemore
Chestnut C2S
Grind consistency does more for the cup than almost any other purchase — a burr grinder is what makes good gear actually taste good.
$75Buy
A brewer to match
AeroPress
AeroPress Original
An inexpensive AeroPress or V60 turns fresh grounds into a great cup with almost no outlay.
$39.95Buy
Add prep tools
Normcore
58.5mm Spring-Loaded Tamper
A WDT tool and a properly sized tamper kill channeling — the cheapest fix for sour, uneven shots.
$42.99Buy
Alternatives to consider
All coffee scales
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V60 Drip Scale (VSTN-2000B)
Hario's own pour-over scale: a built-in timer, a footprint sized for a V60 and server, and 0.1 g up to 200 g.
Pour-overReliable basics
Fellow Researched
Tally Pro
Fellow's precision scale with brew-studio modes and the cleanest design on the counter.
DesignBrew-studio modes