MakerPi Tiruler 2.0

Checking one more millimetre, drawing a 45° line, cutting right after marking: small tasks like these often mean hunting for a ruler, pencil, protractor, caliper and knife. The MakerPi Tiruler 2.0 is designed to cut down on that tool-switching. According to the maker, it combines straight-line, angle and curved-surface measurement with marking, light cutting and caliper functions, built mainly from Grade 5 titanium with brass parts, at roughly 63.3g.

Two arms, one hinge doing several jobs

The core is a pair of 10cm ruler arms that fold together for carrying and open out for measuring. The hinge is more than a fold: the maker says it also serves as a protractor, with stops that snap quickly to 45°, 90° and 180°, so the tool can act like a small square when checking right angles. The standard version carries metric markings on one arm and imperial on the other, with metric-only and inch-only configurations also offered.

Built-in tools

• A magnetically stowed everlasting pencil with a water-resistant, sharpening-free tip that can be replaced when worn
• Holes at 5mm intervals along the arm that turn the pencil into a simple compass, pivoting on a fine pin stored in the pencil's top; the pin also works as a SIM ejector or for small piercing
• A magnetic craft knife that takes standard #11-type scalpel blades, held in a slot with an additional retention mechanism
• A measuring wheel in the hinge that covers 100mm per revolution and clicks at the zero position, for rolling along bottles, pipes and frames
• A pull-out pocket caliper with a vernier scale readable to about 0.1mm

For inside dimensions, the caliper uses two 1.5mm-diameter pins across a range of 3–55mm. The maker notes that 3mm must be added to the brass scale reading: a reading of 11mm means an actual measurement of 14mm. On long curves, the wheel's revolutions are counted and the final scale reading added.

Sharper scales

The markings are chemically etched and filled with black ink, which the maker says increases contrast against the metal and makes fine numbers and lines easier to follow. Taken together, the Tiruler 2.0's pitch is less about feature count than about keeping measuring, marking, angle-setting and light cutting in one continuous workflow.