ERMA Stage Micrometer

Scale: 1mm
Resolution: 0.01mm
Dimensions: 76.2 x 25.4 mm
Thickness: 1.10 mm
Packed in a sturdy plastic box

Erma Stage Micrometer is used to calibrate the reticles of the eyepiece as well as the objective powers. While microscopes are used to magnify samples, they are also used to measure objects. For objects that need to be seen under a microscope, naturally, we need a tiny ruler to measure them. That tiny ruler is also known as Erma Stage Micrometer.

Quick Usage Guide:

1. Ensure the eyepiece reticle is in sharp focus. Place the Stage Micrometer on microscope stage.
2. Position and focus so the stage scale is clearly visible. Rotate the eyepiece reticle and position the stage in the field of view so that the two scales appear parallel, one positioned above the other.

The ERMA Stage Micrometer (Model: ESM-011 / SM-001) is a globally recognized, high-precision calibration standard engineered to establish absolute dimensional accuracy in microscopy. Manufactured by [ERMA (Japan)](1.1.6, 1.2.4), this optical glass slide features an ultra-fine, linear scale measuring 1 mm in total length subdivided into 100 equal divisions. It serves as the master reference tool for calibrating ocular micrometers (eyepiece reticles), objective lens magnification powers, and digital microscope camera imaging software across clinical, academic, and industrial sectors.

Key Product Features

• Chromium Dark Line Etching: The micro-ruler graduations are permanently vacuum-deposited onto the glass slide using a high-contrast chromium metal film. These dark lines provide crisp edge-definition and will not fade, blur, or peel under intense high-power microscope illumination.
• Exceptional 0.01 mm Resolution: The 1 mm scale is mathematically split into 100 precise subdivisions, giving each unit interval an exact value of 0.01 mm (10 microns). This rigid alignment yields a highly predictable reference layout for high-magnification scanning.
• Built-In Cover Slip Protection: The delicate etched measuring window is securely sealed beneath an integrated, optically flat cover slip glass. This protective layer isolates the scale from dust accumulation and accidental scratches during active handling or stage movement.
• Universal 1″ x 3″ Slide Footprint: Adheres to universal metric slide dimensions (25.4 mm x 76.2 mm x 1.1 mm), fitting perfectly into the stage brackets, clips, and automatic mechanical positioners of all major compound, stereo, and digital microscope brands.