Legible
In build · early access opening Register interest

For UK weighing scale service companies

Stop typing up
yesterday's certificates.

Your engineer captures the calibration on a tablet, at the scale, with or without a signal. The certificate is drafted from those readings the moment it syncs — ready to check and issue, with nobody typing it out a second time.

One email when the pilot opens. Nothing else, and your details go nowhere else. Privacy notice.

Your Company Ltd Unit 7, Your Business Park · 0113 000 0000
Cert no. YC-04821

Certificate of Calibration Traceable

Bench scale · Class III · Max 30 kg · e = 10 g · Serial B714021

SiteUnit 4, Brookfield Ind. Est., Leeds
Asset refBRK-SC-07
Tested18 Sep 2026 · M. Reynolds
Weight setWS-214 · M1 · cert valid to Mar 2027
AppliedIndicatedErrorMPEResult
0.000 kg0.0000.000±0.005Pass
5.000 kg5.0000.000±0.005Pass
15.000 kg15.005+0.005±0.010Pass
30.000 kg30.010+0.010±0.015Pass
EccentricityMax deviation 0.010 kg — within MPE
Repeatability3 × 15 kg, spread 0.005 kg
As found: pass Issued 21 Sep 2026 · approved by J. Harper Issued with Legible

The sheet underneath is what your engineer writes today. The certificate on top is what the customer receives — built from those same readings, without anyone keying them in again.

What it does

Built around how the job actually runs

Capture on the tablet, at the scale

Readings, eccentricity and repeatability go in once, where they're taken. Forty machines on one site? Type the last few digits of a worn serial plate and it's found.

Offline is the normal case

Plant rooms, cold stores, basements, farm weighbridges. Everything works with no signal and syncs the moment there's a bar of 4G.

Calibrations fall due by themselves

Each site has its own calibration date, so its machines come due together and a scale added later joins the cycle. A mid-year call-out doesn't knock the whole site off its anniversary.

Drag-and-drop booking

Due work waits in a tray beside the week. Drop a site on an engineer's day and it's booked as a draft; agree the date with the customer, then push it to their tablet.

Repairs, from diagnosis to return

Diagnose from the engineer's photos before the instrument even reaches the workshop. Quote from your own parts list, name the technician on the bench, and re-quote if something else turns up halfway through.

Contracts that answer who pays

Each contract says what's included, what's included up to a limit, and what's charged at an agreed price or your rate card. The booking form shows the answer before anyone gets in the van.

One register of every asset

Every scale you look after — its type, its history, its tolerances and when it's next due — searchable across all your customers instead of a filing cabinet per site.

Certificates that never change

Once issued, a certificate is frozen: its layout, its statement, your firm's details and the approver's name, exactly as they were on the day. Change a setting next year and last year's certificates stay as issued.

Scheduling

The diary, not just the certificate

Work that's due sits in a tray beside the week you're booking, so you can see what else is on while you fill the day.

Pick up a site and every day tells you how far it is from that engineer's nearest job. Drop it and it's booked as a draft. Agree the date with the customer, then push it to the tablet. A draft never reaches the engineer.

Move a booking to another day and it goes back to draft, because nobody has agreed that day yet. Drag it back to the tray and it waits there with its work, rather than being cancelled and booked again from nothing.

Week of 28 September
Calibration / service Call-out Draft
Due to book · 3 sites Kirkgate Bakery4 due Oct Vale Dairy2 overdue Ashby Pharma14 due Nov
Mon 28Tue 29Wed 30Thu 1Fri 2
M. ReynoldsYorkshire
Brookfield Ind. Est.6 calibrationsOn tablet
4 mi
Hartley FoodsCall-outOn tablet
22 mi
D. OkaforNorth West
Dunn & SonsWeighbridgeAgreed
61 mi
Mersey Grain9 calibrationsDraft
S. WhitfieldMidlands
Calder MeatsCall-outOn tablet
Trent Labs22 calibrationsAgreed
48 mi

Swipe the board across

Kirkgate Bakery picked up from the tray: each free day shows the distance to that engineer's nearest job. Illustrative — engineers and customers are made up.

Contracts

Who pays, settled before the job is booked

A contract is a grid, not a paragraph. For each kind of work it's included, included up to a limit, charged at a price you agreed with that customer, or charged at your rate card.

Book a call-out and the form shows the contract's answer first. Override it and you give a reason, so the record shows a decision rather than a default. And it's the contract in force on the day of the work that decides — renew early and the old terms still cover the last week of the old year.

Your rate card prices calibration the way the work actually varies: a balance by how finely it reads, a weighbridge by its capacity, with separate prices for traceable and for UKAS accredited calibration. Every price shows how it was reached.

Kirkgate Bakery Service contract · in force to 31 Mar 2027
CalibrationIncludedevery instrument on the contract
ServicingUp to a limit2 visits a year, then standard rate
Call-outsUp to a limitfirst 3 a year, then £95 fixed
LabourAgreed price£58 an hour
PartsAgreed pricelist price less 10%
All-in fee£4,800 a year, billed quarterly from 1 April
Next bill1 Oct 2026 · £1,200.00
Customer portal

Your customers get their own view

Your Company Ltd Customer portal Kirkgate Bakery · Leeds
Waiting on you · 2
Repair quote Q118 · version 2 Floor scale BRK-FS-02 · replace load cell · £312.40 + VAT
ApproveDecline
Visit date · Tue 6 Oct Annual calibration, 14 instruments
AgreeAnother day
Your instruments · 14
BRK-SC-07Bench scaleDue Sep 2027PDF
BRK-FS-02Floor scaleQuote waitingPDF
BRK-BL-01BalanceDue Sep 2027PDF
Repair · BRK-SC-11
  1. Diagnosed
  2. Quote approved
  3. Repair in progress
  4. Ready to come back
  5. Returned
Call-outs 1 of 3 used this year Next bill 1 Oct 2026 Certificates 212 on file

Every customer gets a login to their own corner of it. Certificates are there as PDFs as soon as they're issued, next to every instrument you look after for them and when each is next due — so the call asking you to email last year's certificates stops coming.

Whatever needs their answer comes to them. A repair quote to approve or decline, with the answer recorded against the exact version they were shown. A visit date to agree, which moves the booking from draft to agreed on your planner without a phone call.

They can follow a repair from diagnosis to return, and see their contract, what it covers, what's been used and their upcoming bills. Logins can be per site: the QC manager sees their own site, head office sees all of them.

How it works

From due date to certificate

STEP 01

It falls due

Each site's machines come due together on the site's calibration date. Nobody keeps a wall chart or a spreadsheet of anniversaries.

STEP 02

Book it and agree it

Drag the site onto an engineer's day, agree the date with the customer — on the phone or in their portal — then push it to the engineer's tablet.

STEP 03

Test at the scale

Test points follow the instrument's class and capacity, and each error is judged against its OIML R 76 limit as it's typed — so a fail shows while you're still stood in front of it.

STEP 04

Check, sign and issue

The visit syncs and the certificate is drafted from the readings as taken. Someone with authority to sign reviews it and issues it, under your firm's name, with the date of issue and who approved it.

Standards

Built to support the standards you work to

Software is not compliant with anything. You are — your procedures, your equipment, your people, your audits. Legible's job is to support that work and keep the evidence straight, not to claim a badge it can't hold.

Most of the certificates your engineers write are traceable calibrations. Some customers need more than that. Legible keeps the two distinct, instrument by instrument, and on every certificate.

Traceable calibration

Tested with weights whose own certificates trace back to national standards, and issued under your ISO 9001 quality system. What most sites need, and what Legible issues today.

UKAS accredited calibration

Issued to ISO/IEC 17025 by a laboratory UKAS has assessed, within its schedule of accreditation, with a statement of measurement uncertainty. Legible is being built so that an accredited laboratory can issue it alongside its traceable work.

UKAS accredits your laboratory, never a piece of software. What follows is what Legible does to support that.

Traceable or UKAS, instrument by instrument
A site with ten scales needing traceable calibration and two needing UKAS accredited calibration is one contract, set machine by machine. Where an instrument is calibrated below what its contract was sold at, the office is shown it.
Only within your schedule of accreditation
A UKAS certificate can only be issued for an instrument covered by an in-date entry on your schedule of accreditation, transcribed from the one UKAS issued you. No setting switches it on, and an entry that has lapsed stops covering.
Authorised signatories
Only named people can approve and issue, and a UKAS certificate can't be approved by the engineer who did the calibration. The approver and the date of issue are printed on every certificate.
Traceability on the certificate
A traceable certificate names the weight set used, with its own calibration certificate and dates. A UKAS certificate lists every weight, because the uncertainty is built from them.
Limits taken from the standard
Maximum permissible errors follow OIML R 76, multi-interval instruments included — and the calculation is tested against the standard's own worked example, not our reading of it.
Frozen at issue
The layout, the calibration statement, the accreditation details — body, laboratory number, schedule reference — your firm and the approver are all fixed the moment a certificate is issued. A correction is a new version with a reason; the original is never overwritten.

Made by people who do this work

Legible came out of a working scale company, not a software studio. The first version is being built against a real service book — real engineers, real customers, real audits — and then opened up to the trade.

If you calibrate and service weighing equipment in the UK, it's being built for you.

  • Independent scale service companies
  • Teams of two engineers or twenty
  • Anyone still typing up handwritten certificates
  • Traceable calibration now, UKAS accredited work on the way

Early access

Be one of the first companies on it

We're taking on a small number of scale companies for the pilot. Leave your email and we'll be in touch before it opens.

No newsletter, no partners, no noise. Ask and we delete your details. Privacy notice.