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Several older telescopes have a focuser or star diagonal for eyepieces with 24.5mm (0.965") barrel diameter. It is possi...

The Ermenrich Reel GK100 laser meter has a wide functionality necessary for most construction, repair, and various house...

The Ermenrich LR1500 laser rangefinder is designed for measuring the distance to an object over a very long distance up...

Ermenrich Ping SM110 is a multifunctional tester for cable tracing, length measurement, and testing of different types o...

The Ermenrich PLUS LN40 self-leveling laser level is a versatile tool that makes it possible to level walls and floors...

Levenhuk LabZZ M2 Microscope is a great instrument for a young biologist. The microscope is very easy to use; it allows...

Levenhuk LabZZ T1 Telescope gives the youngest astronomers an opportunity to unravel the mysteries of the Cosmos. The te...

This T2 extensions has a male T-thread on one and a female T-thread on the other side. With this adapter, you can bring...

This T2 extensions has a male T-thread on one and a female T-thread on the other side. With this adapter, you can bring...

Converts 2" female into 2" male thread. Can be used to connect Baader Hyperion Mark III Zoom directly to a Baader Star D...

Assuming no prior experience, the author runs through the basics for how to take astrophotos using just a camera — inclu...

The Ermenrich NetGeeks NP10 is a cable and PoE tester designed for testing network and telephone cables for Ethernet pow...

Long distance and bad weather are not an obstacle to quality observations when you have Levenhuk Karma PRO 10x42 Binocul...

Objective solar filter - with Baader solar filter foil, for 250 mm telescopesSolar filters are mounted in front of the t...

This high quality 90-degree multi-coated mirror diagonal for refractors allows you to take advantage of the wider field...

Objective solar filter - with Baader solar filter foil, for 102 mm telescopes. Solar filters are mounted in front of the...

Objective solar filter - with Baader solar filter foil, for 200 mm telescopes. Solar filters are mounted in front of the...

Objective solar filter - with Baader solar filter foil, for 80 mm telescopes. Solar filters are mounted in front of the...

Objective solar filter - with Baader solar filter foil, for 150 mm telescopes. Solar filters are mounted in front of the...

Biology class is one of the most interesting and informative in the school curriculum; but a biology textbook is not eno...