Graticules Optics, Walton & Beckett Reticle for Asbestos Count, 5:1Ratio Glass Sandwhich #G25

Important note before placing an order:

The circle on these Walton and Beckett reticles must represent 100 µm at the stage and each one must be custom manufactured to suit each individual instrument. Therefore, in order to properly manufacture the appropriate reticle, you must provide SPI Supplies with the following information with your order:

Calibration factor or the information for us to calculate it for you which would include:
Objective magnification
Eye piece magnification
Diameter of reticle disc required
Microscope make and model

When placing an order via the Shopping Cart, place the order first, getting the order Reference Number, then send us an e-mail making sure you reference the order Reference Number and then give us the needed information. 

Walton and Beckett for asbestos counting, 5:1 aspect ratio; glass sandwich.
This pattern is based on a new design by the Institute of Occupational Health, United Kingdom.

Pattern G25: