Dental Calipers

It is a ring-style bone ridge-mapping caliper with opposing contact tips for measuring ridge width or thickness, and its 0–35 mm nominal scale identifies the range. That is a different measuring task from checking the thickness of a crown or wax restoration.

No. Range describes the span of the scale, graduation interval describes the scale divisions, and accuracy concerns how close a measured value is to the true value. Those are separate specifications, so a range label should not be used as an accuracy claim.

On a graduated arc marked in millimeters, which is a manual reading format. This model has two finger rings, hinged arms and curved opposing pointed tips; the tips define the contact separation, and the arc shows the reading.

A ridge-mapping caliper has opposing contacts for ridge-width assessment, while manufacturers list separate Iwanson wax and metal gauges with different contact forms. Identify the measuring task and the contact design when you choose between ridge calipers and laboratory thickness gauges.

Match the ridge-mapping pattern, the nominal 0–35 mm scale and the ring-handled form with curved opposing pointed contacts. Those details identify the pictured manual ridge caliper more precisely than the broad term "dental caliper".