Extech 461891 High‑Precision Contact Tachometer

Extech 461891 High‑Precision Contact Tachometer – 0.5–19,999 RPM & 0.2–6560 ft/min Surface Speed, ±0.05% Accuracy, Last/Min/Max Recall & Full Accessory Kit
- Wide RPM & Surface Speed Range — Measures rotational speed from 0.5 up to 19,999 RPM and surface speed from 0.2–6560 ft/min (0.05–1999.9 m/min) for versatile mechanical diagnostics
- Unmatched Precision — Delivers ±0.05% accuracy of reading with quartz-crystal timing, enabling reliable measurements in demanding applications
- Memory Recall & Multi-Mode Display — Features memory recall for last, minimum, and maximum readings on a clear 5‑digit LCD for convenient monitoring
- Complete Accessory Kit Included — Arrives ready-to-use with cone and flat tips, surface speed wheel, AA batteries, carrying case, and full user manual
- Durable for Field Use — Rugged, handheld design crafted for industrial and maintenance environments, ensuring both portability and longevity
Extech 445715 Big Digit Hygro-Thermometer with Remote Probe, Probe Clips Onto Meter or Extends on 18" (457mm) Cable, Measures Humidity From 10% to 99% RH and Temperature From 14 to 140Â°F (-10 to 60Â°C)

This Big Digit Hygro-Thermometer with extendable probe (18" cable) measures humidity from 10% to 99% RH and temperature from 14 to 140Â°F (-10 to 60Â°C). Accuracy of Â±4%RH and Â±1Â°C/1.8Â°F. This meter also includes maximum, minimum and rest functions and has a rear calibration adjustment post with optional RH calibration bottles.
Key Features
- Probe clips onto meter or extends on 18" (457mm) cable
- Measures humidity from 10% to 99% RH and temperature from 14 to 140Â°F (-10 to 60Â°C)
- Max/Min with reset function
- Rear calibration adjustment pot
- Comes complete with built-in stand, mounting bracket, sensor, and 1 AAA battery
Specifications
- Humidity: 10 to 99% RH
- Temperature: 14 to 140Â°F (-10 to 60Â°C)
- Accuracy: Â±4%RH; Â±1Â°C/1.8Â°F
- Battery: 1.5V 'AAA' cell
- Dimensions: 4.3" x 3.9" x 0.78" (109 x 99 x 20mm)
- Weight: 6oz (169g)

Country	USA
Brand	Extech
Manufacturer	Extech
Binding	Tools & Home Improvement
ItemPartNumber	445715
Model	445715
Warranty	1 Year
Color	Product color: Very Dark Green
Size	Hygro-Thermometer
UnitCount	1
UPCs	885585531077
EANs	0885700802518
ReleaseDate	0000-00-00

Extech 461891 High‑Precision Contact Tachometer – 0.5–19,999 RPM & 0.2–6560 ft/min Surface Speed, ±0.05% Accuracy, Last/Min/Max Recall & Full Accessory Kit

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Extech 461891 High‑Precision Contact Tachometer – 0.5–19,999 RPM & 0.2–6560 ft/min Surface Speed, ±0.05% Accuracy, Last/Min/Max Recall & Full Accessory Kit