Multi-functional caliper multi-tool resting on stone

Titanium Pocket Calipers

Five tools that ride on your keys — caliper, adjustable wrench, bottle opener, nail puller, and a tapered pry tip. All cast into one 6 cm frame.

  • Millimeter scale etched into the frame — measure a bolt or a gap without guessing
  • Screw-drive jaw opens and closes to grip small nuts and bolts
  • Nail puller, bottle opener, and tapered pry tip built into the same body
  • 6 cm × 2 cm, rust-resistant alloy, no hinges or moving parts

30-day returns · Delivery in 12–16 days


5

Tools in one frame

6cm

End to end — 2.36 in

1

Solid cast frame

0

Moving parts to fail


One frame, five tools

The whole junk drawer. On your keyring.

01

Adjustable wrench

Opens and closes on the thread to fit small nuts and bolts. For the loose bracket, the wobbly handle, the thing you'd otherwise walk to the garage for.

02

Bottle opener

The one you'll actually use most. Slots under the cap, one flick, done.

03

Caliper

Milled scale down the body. Measure a bolt head, a gap, a thickness — without guessing.

04

Nail puller

Notched jaw grips and levers. Also handles staples, tacks, and lids that won't budge.

05

Pry tip

Tapered nose for opening boxes, splitting tape, and popping seams. Backs out a screw in a pinch.


How it's built

01

One-piece frame

The one-piece cast frame

Cast as a single body, not assembled from parts. It shrugs off pocket sand, salt air, and a drop to concrete. Light enough that you stop noticing it until you need it.

02

Etched millimeter scale

Millimeter graduations etched along the lead screw

Graduations machined into the metal, not printed on it. Unlike a digital caliper, there’s no battery to die and no zero to reset — and nothing to rub off in a pocket.

03

Screw-drive jaw

The knurled thumb wheel and screw-drive jaw

A knurled thumb wheel walks the jaw along a machined lead screw. It holds a measurement without a lock, and it clamps a nut without slipping.

04

Keychain-ready

The lanyard hole machined into the tail

A lanyard hole is machined into the tail, right behind the pry tip. At 6 cm it disappears next to your keys — until something needs opening, gripping or measuring.

Machined to spec

The drawing is the product.

Every face is CNC-machined to the print — the jaw travel, the scale and the pry tip included. Dimensions below in millimeters.

  • Overall length, jaw extended91 mm
  • Body length57 mm
  • Jaw travel36 mm
  • Head width20 mm
  • Body thickness6–8 mm

Against the alternatives

Why vernier?

Titanium Pocket CalipersMulti-tool cardAdjustable wrench
Measures in millimetersYesRoughlyNo
Grips and turns a nutYesFixed sizesYes
Pulls a nailYesNoNo
Pries a box or a seam openYesBarelyNo
Fits on a keychainYesYesNo


In the field

Where it earns its keep.


FAQ

Before you ask

How accurate is the caliper?

The frame carries a millimeter scale machined into the metal. For pocket checks — bolt shafts, dowels, "which size nut is this" — that is exactly the precision the job needs, and it holds for life because there is nothing to drift.

How big is it really?

Closed, it is about the length of a house key; the jaw screws out to a 91 mm overall reach with 36 mm of travel. It hangs on a keyring or a zipper pull without adding noticeable bulk.

Will it rust or wear?

The frame, jaw and lead screw are titanium alloy — no rust, no pitting, no plating to flake. The graduations are etched into the metal, so they cannot rub off in a pocket.

Shipping and returns?

Shipping is a flat $4; delivery takes 12–16 days. If it isn't the most-used tool on your keyring within 30 days, return it for a full refund. Questions? Email us at support@titaniumpc.com.

Five tools. One keyring.