Whenever photographs are taken of evidence, it is of paramount importance to have a scale included in the photo to be used as a reference to show the actual size of the item being photographed. Our series of photographic scales provides you with a wide selection for properly photographing any type of evidence.

Vinyl Photo Scales

These flexible, nonglare vinyl scales are available in six different colors to guarantee contrast against any type or color background. Each scale is marked in both inches and millimeters and has crosshair circles at each end to assist in photogrammetry.

Authorized ABFO No.2^© Photomacrographic Scale

The ABFO No. 2^© Scale was designed by the American Board of Forensic Odontology and is used through the country when photographing bite marks on a victim’s body. The three crosshair circles are useful in helping to compensate for distortion resulting from oblique camera angles. The graduations are all metric, except for the width of the legs, which are 1” wide. The 1 cm division lines are traced and extended across the photographic print to grid an image. Measurements within the image are then made relative to these inscribed 1 cm grid lines to compensate for any distortion resulting from non-parallelism between the film and the object planes.

ABFO No.2^© Specifications

L-Shaped Photomacrographic Scale

This L-shaped scale is similar to the ABFO No. 2^© Scale, however, it is printed in inches rather than the metric system. It is made of the same heavy, laminated plastic with a nonglare finish and has 3 crosshair circles to assist in correcting parallax. There are alternating black and white bars to allow for measurements of grossly over or underexposed photographs and bars of approximate 18% gray scale for color corrections.

Fluorescent L-Shaped Photomacrographic Scale

Identical to the L-shaped scale shown above, but constructed of heavy cardstock. These Fluorescent Photomacrographic Scales are printed in a bright orange which fluoresces under a UV light source. This scale is used when photographing evidence such as latent prints that have been dusted with fluorescent powders.

"Bureau" Reference Scale

The “Bureau” Reference Scale set contains an L-shaped scale which is 30 cm long on the long arm and 15 cm on the short arm, and a second straight scale which is 15 cm long.

One side of each scale is white with black print and the other side is black with white print. These scales are made to official FBI specifications and photograph well under a variety of lighting conditions. These scales have crosshair circles which provides a means of checking and correcting perspective distortion.