Measuring and tracking: scales, labels and records
This shelf is about two different kinds of accuracy: getting a number right at the moment you take it, and still having it in a month. Half of it is measuring equipment and half of it is writing things down, and the second half is the part people skip and then regret.
For measuring, resolution is the specification that matters. A 0.001 g pocket scale reads milligrams; a 1 g kitchen scale cannot, however good it looks. A pH meter gives a number to two decimals where strips give a colour and a guess. A magnifier clip or a lighted magnifier and a bright desk lamp belong here too, because half of "I can't read the lines" is the light rather than the eyes. A micro-spatula set is the part people forget: a milligram scale is only as accurate as whatever carries the powder onto it.
For records, the cheapest thing here is a waterproof blank label with the date and the volume written on it, and it answers more future questions than anything else here. A laminated-tape label printer survives fridge condensation where a handwritten label on a curved 3 mL vial does not. Beyond that: a paper log book, a reminder timer that shows how long since the last press, a magnetic planner on the fridge door where the vials already are, and a skin marker for rotating sites without a chart on the wall. The body-measurement and home-test items — tapes, scales, calipers, a blood-pressure cuff, an HbA1c kit — are here because they are what people actually track over months. Read their own instructions, and see the blood-tests guide before buying one.
What differs between listings
- Resolution. The smallest step it can show. A 0.001 g scale reads milligrams; a 0.1 g kitchen scale cannot.
- Resolution: the smallest step the instrument can actually show.
- Whether it records for you — to an app, or to a memory you can read back — or leaves the writing down to you.
Everything in Measuring & Tracking (20)
- Milligram Scale (0.001 g)0.001 gCalibration weights
- Dose Log BookDate · dose · notes
- Waterproof Blank LabelsWaterproofBlank
- pH Test Strips (0–14)pH 0–14
- Dose Reminder TimerAlarmShows time since
- Skin Marker PenFine tipSkin-safe inkWashes off
- Smart Body ScaleBluetooth to phone0.1 kg / 0.2 lb stepsApp keeps the history
- Body Measuring Tape150 cm / 60 inRetractsInches and cm
- Weekly Pill Organizer7 daysAM / PM versionsEasy-open lids
- Magnetic Fridge PlannerMagneticDry-erasePen included
- Digital pH Meter0.01 pH stepsPocket sizeComes with calibration powder
- Brother P-touch Label MakerLaminated TZe tape (waterproof)9–12 mm labelsKeyboard or phone versions
- Skinfold CaliperPlastic, spring-loadedChart included
- Bright LED Desk LampAdjustable armDimmableDaylight setting
- NIIMBOT M2 Label PrinterThermal transfer (ribbon) — no fading300 dpiLabels from 20 mm wideBluetooth, phone app
- RENPHO Smart Body TapeBluetooth to appSelf-locking150 cm / 60 in
- Upper-Arm Blood Pressure Monitor (Omron)Upper-arm cuff; look for a validation listing (e.g. the validatebp.org register) on the product pageStores readingsCuff 22–42 cm
- Pill SplitterV-shaped cradleShielded bladeFits small and large tablets
- A1CNow Home HbA1c TestHbA1c in 5 minutesAnalyser + 4 testsFinger-prick
- Stainless Micro Spatula & Scoop SetStainless steelDouble-ended micro scoops22 pieces
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Guides for this shelf
- Measuring accurately — units, bubbles and dead space
- Units and millilitres: a conversion table
- Blood tests: what people track, and where to actually get them
Last edited 2026-09-15. Equipment only: nothing on this page is advice about what to inject, how much, or whether a product is fit to use. That comes from the product's labelling and whoever supplied it. Affiliate links open your own country's Amazon store; your price is the same.