---
title: "MeasurementOfBars"
description: "one measurement of the bars of nearness under a model: the probes in use, the units read, the shares each breadth admits, and the bars written"
section: concepts
address: /concepts/measurementofbars
contract: 0476e35e6e275db5
---

# MeasurementOfBars

one measurement of the bars of nearness under a model: the probes in use, the units read, the shares each breadth admits, and the bars written

[figure: MeasurementOfBars is a work at platform scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | work |
| scope | platform |
| key | the model and the day |
| store | postgres |
| family | rules_engine |



## Fields


| field | type | required | note |
|---|---|---|---|
| `model` | [Model](/concepts/model) | yes |  |
| `probes` | `count` | yes | the distinct concepts of the kept predicates' semantic leaves |
| `units` | `count` | yes | the units with a vector under the model |
| `shares` | `{text:share}` | yes | the share of the population each breadth admits, from the parameter row |
| `bars` | [BarsOfNearness](/concepts/barsofnearness) | no | absent while the measurement is not possible, with the reason |
| `version_written` | `count` | no | the version of the parameter row written |
| `why_stopped` | `text` | no |  |



## Routes that use it
No route takes or returns MeasurementOfBars directly. The record holds it, and the objects that point at it reach it.