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The items on this page provide a means to accurately scale
photographs and radiographs for use with Metron.
The Auto-Scaler contains special metal
markers which will appear in a radiograph. Metron will automatically
locate this marker and set a scale for the image! This is
the best and easiest way to calibrate a radiograph!
Learn more about the Auto-Scaler.
The "Auto-Scaler"
The Finger-Scale is a simple scale which is used when
taking a photo of the underside of the hoof. It conveniently
clips onto a finger of the person holding the hoof. It contains
a 2" scale and can be written on with a dry-erase pen
to note the horse, foot, date.
The Finger-Scale
The Metron Block provides everything you need to accurately
scale lateral and frontal photos of the hoof, as well as lateral
and DP radiographs of the hoof.
The Metron Block
The Metron Block provides a unique 4-point photo
calibration method so that all linear measurements are accurately
scaled to the center of the hoof capsule (centerline of the
hoof for lateral shots, and widest part of the hoof for frontal
shots). The block has three areas for writing with a dry-erase
pen. For radiographs, there are special metal markers built
into the top portion of the block. These are automatically
located by Metron and used to scale the radiograph. Details
on the Auto-Scaling system.
How does the 4-point photo calibration system
work? A simple 2-point scheme (e.g. a scale marker on the
side of a block) can introduce errors in measurements at the
centerline of the hoof, as seen in this
example. Using the 4-point scheme establishes a calibration
system that computes accurate length measurements in the plane
of interest (in this case, the centerline of the hoof) as
seen in this example.
Metron provides for easy use of the block - you just pick
the 4 calibration points in the image and the scaling is done
for you.
For use with radiographs, the 2 1/4" height
of the block is ideal for use with most portable x-ray units.
For example, for the popular Min-Xray HF100 and HF80 units,
the block is a good height. For bigger, bulkier x-ray units
you may want a taller block, so you may need to attach an
additional 1.5" piece of wood to the bottom of our block.
We sell these items as follows:
The Auto-Scaler for $99
2 Finger-Scales for $29
The Block for $125
We also offer the Hardware Kit which
contains everything you need. It contains two blocks, as we
recommend that both feet are placed on blocks of equal height,
especially for radiographs. It also contains one "Auto-Scaler"
and two Finger Clips. The Ultimate Hardware Kit contains:
2 Finger-Scales
2 Blocks
1 Auto-Scaler
All for $350
The blocks are a bit heavy so we do need to
charge shipping: $10 per block in the USA, and $25 outside
the USA.
Note: the scaling features of the Block
are supported only in Metron-PX version 2.0 and later, so
please upgrade to 2.0 if you want to use the Block. It is
even more fully supported in verstion 3.0 and later! The "Auto-Scaling"
features are only supported in version 4.0 and later.
Use our Order
Form to order hardware items, and/or any other EponaTech
product.
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