Photo ruler with cm and mm markings, 40 cm in length. Overall length about 44 cm, thickness: 3 mm. One side of the ruler is white with black printing. The other side is black with white printing.

Photo ruler for photographing footprints, with a hinged L-shape. The long side is 35 cm and the short one 20 cm. One side of the scale is white (glossy) with black printing; the other side is black (matt) with white printing.

Roll of self-adhesive marking tape (10 meters), black-white printing with a scale divided in mm, 0.5 cm, 1 cm, and 5 cm. The tape is 1 cm wide.

These photo rulers have a design similar to that of the FBI Bureau Scales. The L-shaped scales are available in two sizes: 30 x 15 cm and 45 x 18 cm and in two variants: fixed or hinged (foldable).
One side of the rulers is matt white with black printing of cm and mm markings. The other side is black with white printing. The fixed L-shaped scale with arms of 30 and 15 cm respectively is also sold as a set with a short ruler of 15 cm (E-49000).

This photomacrographic corner square scale is in the style of the ABFO No. 2 one. The ABFO scale was developed especially for the photographing of bite marks. It is also used when photographing small items. The circles on the scale are meant for identifying and compensating distortion when the camera is not parallel with the scale.

PVC (vinyl) rulers with on one side a scale of 0-15 cm and on the other side  0-6 inch.

Fluorescent rulers, 15 cm with a similar design as the PVC 15 cm rulers. However, these are not PVC but card stock (thick paper) and printed in fluorescing colors (orange and green). The fluorescence (top part in the picture) was photographed with UV light and a 455 nm fllter in front of the lens.

PVC (vinyl) rulers with on one side a scale of 0-5 cm and on the other side 0-2 inch.

Fluorescent rulers, 5 cm with a similar design as the PVC 5 cm rulers. However, these are  not PVC but card stock and printed in a  fluorescing color (orange or green). The fluorescence (top part in the picture) was photographed with UV light and a 455 nm fllter in front of the lens.
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Fluorescent L-shaped rulers on card stock in the style of an ABFO #2 corner scale. The scale is in centimeter (8 x 8) and printed on the inside of the corner.
There are two colors available: orange and green. The printing fluoresces under UV and blue light (see pictures).

Magnetic ruler (H-27000), 60 cm long and 1 cm wide, with black on white printing (cm and mm division).

Magnetic rulers with the same design as the PVC rulers of 15 cm.

Magnetic rulers with the same design as the PVC rulers of 5 cm.

This disposable paper L-scale ruler is used when photographing smaller objects. One side has a black background with white printing, the other side has a black print on a white background.
The ruler has a scale of 0-10 cm.

This disposable (paper) photo ruler is intended for use when photographing small objects. One side is white with black printing, the other side is black with white printing.
The ruler has a scale of 0-15 cm.