How to Connect a Cordless Compound Monocular Microscope? – All You Need to Know with Tips & Tricks

Are you wondering how to connect a cordless compound monocular microscope?

Let’s find out.

How to Connect a Cordless Compound Monocular Microscope?

  1. Uncover the microscope and position it in front of you. 
  2. Rotate the revolving nose piece until the four times objective clicks into position. 
  3. Be careful when rotating the nose piece. Do not rotate past the 40 times. 
  4. Raise the condenser as high as it will go using the condenser adjustment knob. You will see the condenser lens protrudes slightly through the hole in the center of the stage.
  5. Take a piece of lens paper and clean all of the visible lenses, including the oculars objectives condenser and the surface of the light source. Be careful to not touch the glass surface of the lenses with your fingertips. 
  6. Open the iris diaphragm by moving the adjustment lever completely to the left if you are using an olympus model
  7. Adjust the light intensity control to 7. If you are using an Olympus model ch30, set the intensity to 3.5.
  8. Turn the power switch on look through the ocular lenses try to keep your eyes about two centimeters from the surface of the lenses.

TELMU 40X-1000X Compound Monocular Microscope

The first thing you’ll notice about this microscopy is its size and weight. It’s so compact that you could almost carry it in one arm.

For me, there are four main features that define this scope:

  • It’s very affordable
  • It has a good magnification range (1,000X is good enough to view microorganisms).
  • It has a single eye
  • It has an adaptor for cellphones

These four things alone make it an attractive option for beginners and hobbyists alike.

Monocular Head

It has a monocular lens (meaning you look through the microscope with just one eyeball).

When selecting a microscope, you basically need to decide between a binocular and monocular head, or a trinocular one. Also available is a ‘trifocal’ microscope which has three sections – one for each eye and one for a lens.

And you can tell that this model is meant to be shared because the heads are designed to swivel so they face whoever is using them. In reality, the swiveling heads feel pretty pointless. They’re not difficult to switch seats and honestly feel more natural.

Overall, the head shows that this microscope is clearly intended for use by children and shared among teachers and parents.

Eye Piece and Cell Phone Adapter

There are two eyepieces available for purchase: one 10x and one 25x. This is pretty common and not something worth mentioning.

The larger eyepieces allow for stronger magnifications up to 1000X while the smaller ones will allow for magnifications down around the ranges you’d expect from a lower-magnifying stereo microscope.

All comparable compound microscopy systems offer these features.

One of the most attractive features of the eyepieces is the built-in cellphone adapter. With it, you can use your smartphone’s built-in webcam to take photos and videos through the eyepieces.

It’s not as good as a standalone microscope camera, but it may be enough for someone who wants to start out without breaking the bank.

The eyepiecis aren’t included with a pointer, which isn’t really a big problem, but it would be nice to have one of these if we’re going to teach people how to use them.

Objective Lenses

You usually get compound microscopy models with between three and six objective lens. This model has three.

It’s not a bad thing at all.

Most hobbyists would probably find that, even if they had a high-powered magnifying glass with six objectives, they’d only be able to see three at any one time. That’s because having extra objectives would likely result in too much magnification.


These objectives are 4×, 10×, and 40× magnification.

With these two features combined, you can see the maximum zoom level for this telescope is 40x (4x objective multiplied by 10x eyepiece), up to 1000x (40x objective multiplied times 25x eyepiece).

For most people, this is plenty of magnification. At 400X magnification, you’ll be able to view cells clearly. At 1,000X magnification, you’ll even be able to view individual molecules.


Most low-end compound microscopes have stages that adjust vertically but not horizontally.

You can use the microscope to adjust the focus, but you won’t be be able to ‘look around’ your specimen.

And that’s the situation with this one.

Children don’t have fine-moto skills, which makes it a real user experience problem for them.

That’s why we usually opt for a model with a “mechanical” phase and will pay an extra fee for it. If your main focus is on having a model very similar to Telmu with a mechanical phase then consider the AmScope M150 C-M.

For a lens that only focuses vertically, it’s nice that there are both fine and coarse focusing rings for accurate focus.


It’s one of our most affordable microscopes because it’s an entry level piece of kit aimed at beginners who want to get started with microscopy without breaking the bank.


This model has both a ceiling lamp and a floor lamp. The overhead lamp is best for viewing visible objects such as coins, stones, and feathers. The underfloor lamp is better for opaque objects such as saliva. I love this setup.

You can use either the light or the camera but not both at once.

It has three AAA batteries, so it’s both convenient and portable.

Additional Goodies – Prepared Slides

One of the biggest signs that this microscope is designed for beginners and children is its four prepared slide trays and six blank slide trays. These prepared slide trays contain animals’ legs, onions, wood, and cotton so you can start using the microscope right away.

You may feel a bit lost when you first start looking at the results, so consider getting a work book or watching some YouTube tutorials to help you understand what you’re seeing.

Advantages and Disadvantages of upgrading

Most people would be satisfied with this model for entry-level microscopy all the way up to high school use.

There are some key reasons why people may choose to move from one type of keto diet to another.

The stage is not Mechanical

It’s important sometimes to have a mechanical stage as it significantly improves user experience.

No Digital Camera

If you’re using an iPhone, there’s a cellphone adapter eyepiece here that lets you start recording. However, a camera eyepiece would be better for recording what you’re seeing.

Cameras are great tools for capturing photos that can be used in classroom presentations.


The TELMU microscope is a good entry-level microscope that provides all you need to get started. It has an excellent price/performance ratio, and it’s easy to use.

If you have any more questions feel free to comment below.


  • John Moses

    John is the Editor in Chief here at The Outdoor Stores. His area of expertise ensures that there is no one better to suggest which rifles are most suitable for your hunting experience. He is also available for you to contact him personally to discuss the types of animals you want to hunt and the terrain you will be hunting on. Feel free to read his posts for expert opinion on Rifles, Scopes, Rangefinders, Bonoculars and Monoculars.

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