The Bench Tool Your Shack Was Missing

The Bench Tool Your Shack Was Missing | Avella Vision
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From the Bench

The SB-101 sat on the bench for six winters. Wasn't the rig. Wasn't me. Was the eight inches between my readers and the chassis.

Here's what I measured. And the tool that finally got the rig done.

By Bill • 2 min read

Bill at his bench with Avella Vision Pro

So I picked up a caliper and measured.

What I found is going to sound stupid. But it's the reason three rigs sat dead on my bench for years — and probably the reason yours are sitting too.

Heathkit chassis mid-restoration on the bench Check Availability →

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What nobody tells you

Reading glasses focus at sixteen inches. The chassis is at eight.

The 8-inch problem: 16 inches reading distance vs 8 inches working distance

After 40, the lens inside your eye gets stiff. Reading glasses fix that — but only at one specific distance.

Sixteen inches. That's a service manual sitting flat on the bench.

It's not the distance to a chassis.

When the iron's in your hand, the board is at eight. Sometimes six. Every alignment, every recap, every kit build happens in a focal zone your readers were never built for.

Ham radio runs on a schematic-to-chassis loop. Read at sixteen. Probe at eight. Your readers give you the first distance. Nothing in a drugstore gives you the second.

8 inches
The gap between where your readers are sharp and where the chassis actually sits when the iron is in your hand. No prescription closes it.
Reading glasses don't focus at chassis distance - left blurry, right sharp

That eight-inch gap is where every IF alignment you've been postponing actually lives. Where the trimmer cap you're chasing hides when you can't hold the schematic and the board in focus at the same time. Where the toroid you wound last week has a joint you can't quite verify, so you don't know if it's cold or just hard to see.

You haven't lost your touch. Forty-seven years on the air doesn't evaporate overnight.

Your eyes are doing their job. Just at the wrong distance for the work.

Why everything else fails

Every magnifier in your drawer was built for a different job.

What's in the drawer Why it fails at the bench
Stronger readers Still calibrated for sixteen inches. Stronger doesn't fix distance.
Optivisor Inspection distance, no light. Still leaning in.
Desk magnifier lamp Stationary. Shadows the board the moment your hand moves.
Jeweler's loupes One eye, no depth, no light. Won't hold through a multi-step alignment.
Cheap Amazon headbands Plastic optics, fishbowl distortion. Headache in twenty minutes. In the drawer now.

None of them are bad products. They're all wrong tools for active bench work at chassis distance.

Small components without and with Avella magnification

The tool that worked

Five lenses, all of them ground for six to ten inches.

Guy on the boatanchor net mentioned something called Avella. I was skeptical — already burned through three pairs of readers and a hundred bucks of magnifiers in the drawer.

But I ordered one anyway.

Five lenses, every one of them ground for the distance where I actually solder. Four LEDs at eye level — doesn't shadow the board no matter how I angle it. Fits over my readers. Light enough I forget it's there.

2.5x lens — 7 inches. Room for the iron, the probe, both hands. Alignment work. Recapping. Kit building.

3.5x lens — 6 inches. Tube pin numbers. Toroid windings. Silver mica caps in the IF cans.

4 LEDs at eye level. Light goes wherever you're looking. No shadow because the light source and your line of sight come from the same place.

Avella Vision Pro on the workbench next to a tube amp and components

Snapped in the 2.5x. Found the VFO trimmer on the SB-101 inside a minute. Had the alignment done by dinner. Got on 20 CW that evening and worked a CO8 station on the first call.

The TS-520 came off the shelf the next saturday. The Drake the saturday after that.

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$54.99

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5 Lenses 4 LEDs 350% Magnification 8hr Battery 45g Lightweight
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FREE Heathkit SB-101 Manual
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See it in action

Thirty seconds. Everything you need to know.

What operators are saying

"I should have done this years ago."

★★★★★
"The LED placement is the thing that got me. No shadows when you're probing the board. I've used desk magnifiers and loupes for twenty years — the shadow problem is why I gave up on them. This fixes it."
— Ron K., Heathkit restorer, Ohio
★★★★★
"Picked up a dead SB-101 at a hamfest for $80 because I knew what it was worth working. This was the tool that let me actually finish the alignment. Sold it for $650 three weeks later."
— Jim T., vintage rig collector, North Carolina
★★★★★
"I've been a ham for 47 years and I thought my bench days were behind me. Turns out I just needed magnification at the right distance. Don't know why nobody makes these for ham radio specifically. First one that actually fits how we work."
— Bill H., Extra Class, Florida
★★★★★
"Fits over my bifocals perfectly. I was worried about that. 45 grams — forget it's there. Realigned the TS-520 and the TR-4C since I got it. Kit building is back on the table."
— Ed P., Kenwood & Drake restorer, Michigan
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Before you order

Common questions.

Will it fit over my prescription glasses?
Yes. Designed to sit over standard prescription frames including bifocals. Multiple operators with bifocals have confirmed it fits without issue.
What magnification for alignment work?
2.5x for most alignment work — IF cans, trimmer caps, general board work. 3.5x for tube pin numbers, toroid windings, silver mica caps, and fine SMD on newer rigs. Both included in the set of five.
How long does the battery last?
8+ hours per charge via USB-C. Most bench sessions are 2-4 hours, so multiple sessions per charge.
Is this different from the cheap Amazon headbands?
Completely different. The plastic lenses on the cheap ones distort at the edges — your eyes start fighting the optics within fifteen minutes. The LEDs sit too low on the frame, so your own hand shadows the board the moment you reach for the probe. Most give you a pressure point on the bridge of your nose by minute twenty. The Avella is optical glass, eye-level LEDs, 45 grams. You'll know within the first alignment step.
How does it compare to an Optivisor?
The Optivisor uses excellent glass but has no lighting and was designed for inspection distance. The Avella is ground for bench distance with built-in LEDs at eye level. Different tools for different jobs — this one was built for active bench work.
What if it doesn't work for me?
Send it back within 60 days for a full refund. No questions. No restocking fee. We cover return shipping. If your first alignment session doesn't show you something you've been missing, it's free.

60-Day Bench Test Guarantee

Try it on one alignment. If it doesn't show you something you've been missing on every board you've worked on — send it back. Full refund. We cover return shipping.

That rig has been waiting long enough.

The one on your bench right now. The one you keep finding reasons not to start. This is what changes that.

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Free US shipping • Fits over your readers • 60-day guarantee

73 de Bill

$99.99 $54.99 • Free shipping
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Questions about fit, magnification, or whether it'll work with your rig?
Email us at hello@avellavision.com — real people, real answers.

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