$50 - $75

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

94224 CG-5/AVX/CGEM Polar Finderscope by Celestron

Get some help polar aligning your Celestron CGEM, Advanced VX, or CG-5 mount with the addition of the Polar Finderscope. Install the finder into the polar finder port, located at the rear of the mount, and focus the eyepiece until the reticle is sharp.

The reticle is etched with a few recognizable star patterns to help you align your telescope. If you are using your telescope in the Northern Hemisphere, you will recognize the Big Dipper asterism on the reticle, as well as the familiar "W" of Cassiopeia. Use the Big Dipper to guide you in the spring and summer months, and Cassiopeia during the fall and winter. The North Star, Polaris, is also designated on the reticle, as is the NCP, or North Celestial Pole. Once you choose which star pattern to use, align your telescope so that the stars line up with the positions shown on the reticle, then move the telescope's azimuth and altitude adjustment controls to place Polaris right in the crosshairs.

The Celestron Polar Axis Finder can also be used in the Southern Hemisphere. Four stars of the constellation Octans are etched in the reticle. Adjust your telescope until those stars line up as shown on the reticle.

• Polar align your Celestron CGEM, Advanced VX, or CG-5 equatorial mount with this Celestron Polar Finderscope.
• Inserts into the polar finder port at the back of the mount.
• The easily identifiable star patterns of the Big Dipper, Cassiopeia & Octans are etched into the reticle, as well as Polaris & the North Celestial Pole, to help with alignment in the Northern or Southern Hemisphere.
• Eyepiece has focus adjustments for reticle clarity.

18526-54 Type J Detachable Handle Adaptor, with Mini-Connector, 5ft Coil Cord by Digi-Sense

Handle material may be affected if the probe is rated higher than the handle depending on exposure time, application, and handle material. ABS handles are rated to 220°F (104°C); PVC handles are rated to 200°F (93°C); Stainless Steel handles are rated at 450°F (232°C); Mini Connectors are rated to 392°F (200°C).

• Handle adaptor excepts detachable probes come with a mini connectors
• Compatible with several different designs of detachable probes.
• Ideal for switching out probes when working with multiple applications
• Handle includes a 5ft coil cord with mini connector
• Each probe comes with a color coded ANSI coiled cable: type J-black, type K-yellow, type T-blue, and type E-purple
• Custom designs or changes to this product are available upon request

90550-68 Dampened Back-Con Bimetal Thermometer, 3" Dial, 12" L/50-550F/10-290C by Digi-Sense

Accuracy is ±1% full-scale when stem is immersed 2" in liquids or 4" in gases (immerse models with a 2.5" stem length 2" in gases). Measured stem length from the top of the threads to the bottom tip of the stem. Stem dia is 0.25"; threaded connection is 1/2" NPT(M). All thermometers meet or exceed ASME B40.3 standards. Maximum environmental temperature for glass lens thermometers is 500°F (148°C).

• Dampened movement
• More economical than silicone gauges
• Greater temperature range than a silicone-filled gauges
• Anti-parallax dial for accurate readings
• Eliminate the risk of a leaking case and cross-contamination
• Rugged 304 stainless steel construction with a clear glass lens
• Recalibrate using the external reset screw
• Hermetically sealed per ASME B40.3 standard to prevent fogging and protect against tough environments

PH105 Electrode for Extech PH100 Meter by AquaPhoenix

The Extech PH105 pH ExStik® Electrode Module is an easy to clean, rugged flat surface pH electrode. It is interchangeable with the ExStik® Chlorine or ORP meters and measures in liquids, semi solids and solids. Also, it has the ATC via the built-in PT-100 Ohm sensor. The Extech PH105 pH ExStik® Electrode Module comes complete with the protective connector cap.

Part Number: 17L-379S

Part Number: 17L-312

Part Number: P10722.5VN

Old Part Number: P10728
New Part Number: P10728VN