Calibrated Lines on Glass by PEAK™

Calibrate your microscopes regularly!

The PEAK Glass Scales are made from a high transmission glass strip, or a transparent glass plate with gradations marked using a process of photo etching and printing. It is very useful in any microscopy laboratory, both as a magnification "anchor" for macrophotography and also for working with stereo pairs in a stereo scope.The scales come either with a separate 15x magnifying loupe or two built in 10x measuring loupes. In other words, the purchaser is getting more a "kit" which contains the scale plus the kind of magnifier needed for the proper reading of the scale. The minimum scale division of all scale products is 0.1 mm.

Calibration of the glass strips is done at room temperature, however for temperatures in the vicinity of room temperature, that is, +/- 10 C°, the coefficient of thermal expansion is such that there will not be any measurable change.

Available with 10x measuring loupes
This variation of the product is for those making the most precise of measurements. It is especially useful in the photo etching and printing industries.

But are these certified standards?
These high precision glass scales are checked with tools that are themselves calibrated against NIST traceable standards. However, the data supplied with these scales would not pass the test of being called "certified standards." Quite possibly, SPI or some other qualified agency could undertake to take a number of different measurements at different locations on a particular scale, reporting not just the average result but also the standard deviation of those measurements. But such additional measurement would add substantially to the cost.

All three scales are 3 mm thick, 25 mm wide with varying lengths. For easier reading of the scale, we recommend the Loupe/Magnifier 15X. The style with the built-in measuring loupes are always 10x.

SPI #	Glass Scale #	Thickness mm	Width mm	Length mm	Marking Length mm	Minimum Division mm
Glass scales with loupe (not attached):
09761-AB	50	3	25	80	50	0.1
02168-AB	100	3	25	140	100	0.1
02167-AB	200	3	25	220	200	0.1
02169-AB	300	3	25	330	300	0.1
Glass scales attached 10x loupes (two attached):
00217-AB	300	10	50	360	50	0.1
00218-AB	500	10	50	560	100	0.1
00219-AB	700	10	50	760	200	0.1
00220-AB	1000	10	50	1060	300	0.1

SPI #	Length	Each	In Stock
Glass scales with loupe (not attached):
09761-AB	50mm	$ 107.00	Yes
02168-AB	100mm	180.73	Yes
02167-AB	200mm	247.93	Yes
02169-AB	300mm	360.61	Yes
Glass scales attached 10x loupes (two attached):
00217-AB	300mm	$ 988.75	No
00218-AB	500mm	1490.31	No
00219-AB	700mm	1977.93	No
00220-AB	1000mm	2805.71	No

To Ask a Question or Make a Comment

To Place an Order or Request a Quote

Return to:

Tuesday May 13, 2008 © Copyright 1996 - 2008. By Structure Probe, Inc.
Contacting SPI Supplies and Structure Probe, Inc.
All rights reserved.
All trademarks and trade names are the property of their respective owners.
Privacy Policy

Worldwide Distributors, Representatives, and Agents