Flexible Support Arms: what Claude and GPT would buy

Two AI models chose on their own, with no web access. Nobody tested these products: this is what each one says, and how to check it.

Claude and GPT choose the same brand, Noga

In Industrial & Scientific, Claude and GPT choose the same brand in 52 of 107 categories.

Claude Opus 5.5 · October 29, 2026

Noga (brand)

Noga's magnetic-base holding arms hold an indicator, lamp or deburring tool in place without drifting, which cheap goosenecks fail to do.

Not for: Anyone who only needs a light-duty gooseneck for a phone, light or webcam, or who needs to route coolant or air rather than hold a tool.

GPT 6.1 Sol · November 10, 2026

Noga DG61003

Its articulated arm, central locking, and magnetic base make precise positioning of dial indicators straightforward and repeatable.

Not for: Heavy loads or mounting directly to nonmagnetic surfaces.

Which one fits you

routing coolant or air to a tool

Loc-Line Modular Hose System (line)

Snap-together segments let you build a coolant or air line to the length and nozzle you need, and it stays where you bend it.

Not for: Anyone who needs to hold a gauge, part or tool rather than direct a fluid.

Check before you buy

Locking mechanism. For measuring work, prefer arms that lock every joint with one knob (hydraulic or central locking) over arms with a separate friction lock at each joint. Single-knob locking sets the arm quickly and stops the indicator from creeping during a reading.
Load at full reach. Check the rated holding capacity at full extension, not at the base. Arms sag or drift once the load moves out to the end of their reach.
Base type. Use a switchable magnetic base on steel surfaces and a clamp or screw-down base on non-ferrous benches. A magnetic base holds nothing on aluminum, wood or a granite plate.
Fitting compatibility. For modular coolant hose, match the hose size system and do not mix sizes without adapters. Segments of different sizes do not snap together.

Where to find Noga

MSC Direct
Hoffmann Group USA
Travers Tool

Shops seen in search results on November 5, 2026. A shop missing here may sell it too. Nothing was checked by a person.

Brands that matter

Noga: Reference brand for magnetic bases and holding arms in machine shops.
Loc-Line: The original modular segmented coolant and air hose.
Starrett: Established maker of magnetic bases for indicators.
Fowler: Common source of machinist magnetic bases and indicator holders.

What to avoid

Unbranded goosenecks sold for indicator work, which spring back after positioning
Magnetic bases with no on/off switch, which are hard to place and remove precisely
Mixing modular hose sizes without the correct adapters

Questions

Hydraulic or mechanical arm?

Hydraulic or central-lock arms set faster and hold more rigidly for indicators. Mechanical arms are cheaper and fine for lamps or light deburring tools.

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