# Klein Tools ET140 Pinless Moisture Meter vs Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter: specs and price compared

A sourced, side-by-side comparison of the Klein Tools ET140 Pinless Moisture Meter (Klein Tools) and Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter (Calculated Industries) among moisture meters.

## Side by side

| Spec | Klein Tools ET140 Pinless Moisture Meter | Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter |
| --- | --- | --- |
| US price | $49.97 | not published |
| Brand | Klein Tools | Calculated Industries |
| Measurement range pct | 0-100% (relative) | Pin: 5-50% wood, 1.5-33% other materials; Pinless: 0.1-100% |
| Pin vs pinless | Pinless | Pin and Pinless (combination) |
| Material calibration groups | Drywall, masonry, hardwood, softwood | Wood, lumber, firewood, drywall, plaster, brick, concrete |
| Sensing depth (in) | 0.75 | 0.75 |
| Accuracy | ±4% | ±(3% + 3 digits) pin; ±3% pinless |
| Hold peak function | Yes | Yes |
| Audible alarm | Yes | Yes |
| Display type | Reverse-contrast LCD + 9-segment LED bar graph, 0.1% resolution | Large digits, white LED backlight |

## Key differences

- Measurement range pct: Klein Tools ET140 Pinless Moisture Meter 0-100% (relative) vs Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter Pin: 5-50% wood, 1.5-33% other materials; Pinless: 0.1-100%
- Pin vs pinless: Klein Tools ET140 Pinless Moisture Meter Pinless vs Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter Pin and Pinless (combination)
- Material calibration groups: Klein Tools ET140 Pinless Moisture Meter Drywall, masonry, hardwood, softwood vs Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter Wood, lumber, firewood, drywall, plaster, brick, concrete
- Accuracy: Klein Tools ET140 Pinless Moisture Meter ±4% vs Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter ±(3% + 3 digits) pin; ±3% pinless
- Display type: Klein Tools ET140 Pinless Moisture Meter Reverse-contrast LCD + 9-segment LED bar graph, 0.1% resolution vs Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter Large digits, white LED backlight

## Sources

- Klein Tools ET140 Pinless Moisture Meter: https://www.kleintools.com/catalog/environmental-testers/pinless-moisture-meter (kleintools.com, verified 2026-08-05)
- Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter: https://www.globaltestsupply.com/product/calculated-industries-7445-accumaster-duo-pro-pin-and-pinless-moisture-meter (globaltestsupply.com, verified 2026-08-05)

Canonical: https://frontdeskreview.com/gear/moisture-meters/klein-tools-et140-vs-calculated-industries-7445-accumaster-duo-pro/
Cite: Per The Front Desk Review, Klein Tools ET140 Pinless Moisture Meter ($49.97) vs Calculated Industries 7445 AccuMASTER Duo Pro Pin & Pinless Moisture Meter (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/moisture-meters/klein-tools-et140-vs-calculated-industries-7445-accumaster-duo-pro/
License: CC BY 4.0.