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Endo Finger Ruler Span Measure Scale Blue
Compact endodontic measuring ruler designed for accurate file length calibration and chairside finger-mounted access during root canal procedures.
Key Features:
• Machined from anodized aluminum alloy with blue color-coded finish
• Compact body measures approximately 35mm × 20mm
• Dual millimeter scales marked from 0–30mm in 1mm increments
• Central longitudinal groove aligns files parallel to the scale axis
• Oval finger aperture provides stable finger-mounted positioning
• Laser-etched markings maintain long-term readability after sterilization
• Single-channel design allows unobstructed left and right scale viewing
• Autoclavable at 134°C without scale fading or dimensional distortion
The Endo Finger Ruler Span Measure Scale Blue is a compact rectangular instrument machined from anodized aluminum alloy. It measures approximately 35mm in length and 20mm in width, small enough to sit on the clinician’s finger throughout the procedure without requiring a separate work surface. The blue anodized finish is laser-etched with dual millimeter scales running in parallel columns on both faces of the body, spanning 0 to 30mm in 1mm increments. An oval finger aperture at the base of the body keeps the ruler seated on any finger size without repositioning.
A central longitudinal channel runs between the two scale columns, providing a flat seating groove where the endodontic file blade rests during measurement. This groove keeps the file aligned parallel to the scale axis, eliminating angular reading error between the file tip and the rubber stop position. The anodized surface withstands repeated autoclave cycles at 134°C without scale fading or dimensional change, a requirement when the same ruler is used across multiple patients per session.
The Finger ruler endo category covers both single-channel and dual-channel designs; this single central groove configuration gives an unobstructed scale reading from either the left or right column simultaneously. Color coding, blue for this variant versus the Endo Finger Ruler-Measuring Scale Green alternative, allows tray organization across multiple operatories without instrument confusion.
Endodontists use the Endo Finger Ruler Span Measure Scale blue to confirm K-file, H-file, and rotary NiTi file working lengths against electronic apex locator readings during root canal treatment. Leader Surgical produces this ruler with verified scale-graduation accuracy and consistent anodize layer thickness, ensuring legible markings and autoclave stability across its full-service life.
What materials are these rulers typically made of?
Most are constructed from durable stainless steel (often German AISI 304 or similar) or high-quality medical-grade plastic and aluminum alloy.
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