$200 - $300

24" Poly Fan Blade, 4-Wing

90452-05 Precision Industrial PRT, 0.187" x 9", -60~160C, Spade by Digi-Sense

AM1610 Series - Precision industrial PRT/RTD probes: Conform to the standard 385 curve, letting you use your DIN/IEC RTD meters fully. Manufactured using a special aged and tested 5mm long sensing element to achieve the best performance in stability and repeatability. All have an accuracy of 35 mK at 0°C and short-term stability of 10 mK at 0°C. The AM1610 has a temperature range of -60 to 160°C (-76 to 320°F)

Part Number: M10111000PM2

22451 StarSense Explorer LT 80AZ Smartphone App-Enabled Refractor Telescope by Celestron

Celestron has reinvented the manual telescope with StarSense Explorer—the first telescope that uses your smartphone to analyze the night sky and calculate its position in real time. StarSense Explorer is ideal for beginners thanks to the app's user-friendly interface and detailed tutorials. It's like having your own personal tour guide of the night sky.

Dock, Launch, Explore

Leave complicated star charts, imprecise planetarium apps, and computerized mounts behind. With StarSense Explorer, locating objects has never been easier, faster, or more accurate. Within minutes of setting up the telescope, you'll be navigating the sky with confidence. Simply place your phone in the unique StarSense dock and launch the StarSense Explorer app. After aligning your phone to the telescope's optics (a quick, 2-minute procedure), StarSense Explorer generates a list of celestial objects currently visible. Make your selection and arrows appear onscreen, guiding you as you to move the telescope. When the object is ready to view, the bullseye turns green.

Smartphone Compatibility

StarSense Explorer works with most modern smartphones, including iPhone 6 and up and most devices running Android 7.1.2 or later manufactured since 2016.

Patented StarSense Sky Recognition Technology

StarSense Explorer uses patented technology and your smartphone to determine exactly where the telescope is pointed in the night sky. A Lost in Space Algorithm (LISA), like the ones satellites use in orbit to correctly orient themselves, helps the app match star patterns it detects overhead to its internal database.

While other astronomy apps may claim that they can help you find objects, they rely exclusively on the phone's gyros and accelerometers, which aren't as accurate as LISA technology. No other app can accurately tell you when your target is visible in the eyepiece.

Sturdy Altazimuth Mount

StarSense Explorer LT's simple altazimuth mount makes it easy to move the telescope to find your target. An altitude slow motion adjustment with a sliding rod helps you fine tune the telescope's pointing position and follow targets as they appear to drift across the night sky. It's all anchored by an adjustable, full-height tripod.

Dazzling Views with High Quality Optics

You can expect sharp, bright views through this 80mm refractor. Fully coated glass optics provide increased light transmission, enhancing details in celestial objects. The telescope also includes a 90-degree erect image diagonal, so you can use it during the day to view birds, wildlife, landscapes, and more.

Perfect for the City or Dark Sky Sites

Even if you live in a light polluted city location, StarSense Explorer is advanced enough to be able to pick out Jupiter, Saturn, Venus, the Orion Nebula, double stars, and a few more of the most famous celestial objects.

But if you can take the telescope to an even slightly darker location, more objects will become visible. The entire telescope kit weighs just 9.2 pounds, so it's perfectly portable and easy to bring on your next camping trip or to a remote observing site.

Everything You Need to Observe Immediately

When you unbox your new StarSense Explorer LT, you'll find:

• 80mm refractor optical tube
• StarSense dock for your smartphone
• Low powered (25mm) and high powered (10mm) eyepiece
• 2x Barlow lens to double the power of each eyepiece
• 90-degree erect image diagonal
• StarPointer red dot finderscope, perfect for using the telescope during the day or without the StarSense Explorer app
• Altazimuth mount with slow motion control rod
• Full-height tripod with an accessory tray to keep you organized

• Unleash the power of your smartphone to take you on a guided tour of the night sky—no telescope experience required.
• Award-winning and patented StarSense sky recognition technology uses your smartphone to analyze star patterns overhead and calculate its position in real time.
• StarSense Explorer Powered by SkySafari™ app automatically generates a list of objects currently visible. View planets, brighter nebulae and galaxies, star clusters, and double stars from the city. Or take your telescope to darker skies to view faint, deep sky objects.
• Manual altazimuth mount with altitude slow motion adjustment with a sliding rod makes it easy to follow the on-screen arrows to your desired target. When the bullseye turns green, it's ready to view in the telescope's eyepiece.
• 80mm refractor with fully coated glass optics for bright, sharp views.
• Includes 25mm and 10mm eyepieces, 2x Barlow Lens, StarSense smartphone dock, erect image diagonal, a red dot finderscope (in case you want to use the telescope without your phone), and a full-height tripod.

Part Number: F101720PN

DC580C1 DC580 Airflow Meter Hot-wire & Vane Anemometer, Hot Wire Probe and Carrying Case by Test Products International

Features

• Measure air velocity & temperature simultaneously
• Automatically calculate CFM
• Field replaceable hot-wire probe and vane probe
• Telescoping 38" hot-wire probe with ruler markings and flat edge for easy and proper probe alignment
• Communicate with smart phone using built in Bluetooth and Free TPI App
• Rubber boot provides protection; magnets on the back of boot provide hands free use
• Record minimum, maximum & average
• Measuring units: ft/min, mile/h, knots, m/s, km/h

Applications:

• Air velocity measurements in HVAC systems
• Air duct traverse and ventilation analysis to balance commercial and residential HVAC systems
• Fume hoods, floor registers, exhaust grills & more

Air Velocity

• Vane: 80 to 4900 fpm; 0.4 to 25 m/s
• Hot Wire: 40 to 3900 fpm; 0.2 to 20 m/s

Temperature

• -4°F to 140°F (-20°C to 60°C)

*Please note we can only ship RKI products to customers within the United States

*Please note we can only ship RKI products to customers within the United States

21049 PowerSeeker 127EQ Telescope by Celestron

Celestron PowerSeeker telescopes are a great way to open up the wonders of the Universe to the aspiring astronomer. The PowerSeeker series is designed to give the first-time telescope user the perfect combination of quality, value, features and power.

Amateur astronomy is a great family hobby that can be enjoyed year round, and Celestron's PowerSeekers are the ideal choice for an affordable and high quality telescope that will provide many hours of enjoyment for the entire family.

PowerSeekers are quick and easy to set up even for the novice. No tools are required for assembly!

Their sturdy equatorial mounts are perfect for tracking objects in the night sky, and the collapsible alt-azimuth mounts are perfectly suited for terrestrial (land) viewing as well as astronomical use.

All of Celestron's PowerSeekers include a full range of eyepieces plus a 3x Barlow lens that provides an increase in viewing power hundreds of times greater than that of the unaided eye!

PowerSeekers are designed and manufactured using all fully coated glass optical components with high transmission coatings for enhanced image brightness and clarity.

Erect Image Optics are ideal for terretrial (land) and astronomical (sky) use.

TheSky Level 1 SoftwareLocate and identify thousands of celestial objects on your laptop or PC with "TheSky®" Level 1 software included FREE with every PowerSeeker model.

• Quick and easy no-tool setup
• Slow motion controls for smooth tracking
• Erect image optics - Ideal for terrestrial and astronomical use
• Fully coated glass optical components with high transmission coatings for enhanced image brightness and clarity
• 3x Barlow lens triples the magnifying power of each eyepiece
• Accessory tray for convenient storage of accessories
• BONUS Astronomy Software download with a 10,000 object database, printable sky maps and 75 enhanced images

Part Number: M101610PN

CS150-C-1-BC-3-A-N CS150 Light Duty Online Conductivity Sensor, Graphite, 12mm, K=1.0, TC, 10FT, TL by Sensorex

The CS150 and CS150TC conductivity probes are a cost effective solution for measuring conductivity in light industrial and laboratory applications.

Sensors feature measuring surfaces. The durable epoxy body construction provides a rugged and dependable sensor for portable and laboratory use. Suitable for use with most portable conductivity meters.

By adding a simple mounting gland fitting, customers may use these in process applications. Mount them in-line, in a pipe "T" fitting, or submerse them into a tank.

Features:

• Ideal for laboratory and light duty process applicationsAvailable with or without ATC (temperature sensor)
• Easy to submerge in a tank or mount inline in a pipe
• Cell constant choices of 0.1 or 1.0
• Compatible with most portable and benchtop meters

72030 SkyMaster Pro 15x70 Binocular by Celestron

SkyMaster Pro binoculars are the ideal choice for amateur astronomers or anyone that observes at great distances. Compared to lower-priced large aperture binoculars, SkyMaster Pro uses superior optics, coatings, internal parts and housing materials. With large objective lenses, BaK-4 prisms and fully multi-coated optics utilizing Celestron's proprietary XLT coating technology, the view through a SkyMaster Pro is second to none at this price point.

• Large 70 mm objective lenses for excellent light gathering in low light conditions or for astronomical observing
• Detachable RSR rail for attaching an optional red dot finderscope
• Rubber armored for improved ergonomics and protection from every day use in the field
• Waterproof and nitrogen purged for use in all weather conditions

Massive Objective Lenses

The 70mm objective lenses have tremendous light gathering capabilities, delivering superior low light performance, even in the dimmest conditions. Choose SkyMaster Pro for use at dusk, dawn and nighttime astronomical viewing.

Fully Multi-Coated Optics and BaK-4 Prisms

Every air-to-glass surface is multi-coated with Celestron's proprietary XLT coating technology. These coatings coupled with BaK-4 prisms increase light transmission through the optical path and deliver crisp, high contrast images with outstanding resolution.

Built in Tripod Adapter

The built in tripod adapter of the SkyMaster Pro 15x70 allows the binocular to be attached to a tripod for added stability during longer viewing sessions and also allows a red-dot finder to be attached to it utilizing the included RSR "Reflex Sight Ready" Rail. When properly aligned with the binocular, the red-dot finder will allow objects to be brought into view quickly.

RSR "Reflex Sight Ready" Rail

The tripod adapter included with the SkyMaster Pro not only allows the binocular to be attached to a tripod for added stability during longer viewing sessions, but also includes a removable rail for attaching a red dot finderscope. When properly aligned with the binocular, a red-dot finder helps you locate objects quickly and center them in the binocular.

Lightweight, Waterproof Construction

A polycarbonate and aluminum housing makes SkyMaster Pro durable and lightweight. The housing's protective rubber armor is extremely rugged and can stand up to tough use.

The fully waterproof housing for use in all weather conditions provides peace of mind when unexpected weather rolls in. The housing is also filled with dry nitrogen gas to prevent the internal lenses from fogging when moving between extreme temperatures or when using the binocular in damp conditions.

Extended Eye Relief

17 mm of eye relief allows for comfortable viewing for both eyeglass and non-eyeglass wearers. Eyeglass wearers can see the entire field of view while looking through the eyepiece with their glasses on. For those that do not wear eyeglasses, the rubber eyecup positions the users eye behind the eyepiece at the correct distance for optimal viewing.

Enhanced Magnification

Bring distant objects into view with 15x magnification great for observing celestial objects in greater detail, searching for wildlife in the brush or viewing a distant object on the horizon.

Part Number: M196250LA