PID's /
Cones
ROUND POSITION INDICATING
DEVICE
(OPEN END LEAD-LINED CONE)
The Margraf PID's (cones) are
available for all makes and models of dental x-ray
units whether new or old.
For maximum protection from x-radiation
exposure, Margraf PID's are designed to exceed
all federal and state requirements.
Our PID's are completely Lead
Lined to eliminate scatter and secondary x-radiation,
yet are light in weight.
Available in three lengths:
- The SHORT PID
(8" Source-to-Skin Distance) is for the
bisecting angle technique, or the standard practice
of the profession
- The INTERMEDIATE PID
(12" S.S.D.) is used where operatory space
is limited and the LONG CONE technique is desired.
- The LONG PID
(16" S.S.D.) is for the Long Cone Paralleling
technique, or where undistorted x-rays are desired.

Measurements and
What They Mean
AFD = Anode to Film Distance
SSD
= Source (Anode) to Skin Distance

Short, Intermediate and
Long designation is based on the combination of
PID length, kVp and AFD of each individual machine.
FFD
or AFD Inches / [mm]
8 / [203]
5 / [127]
12 / [305]
9 / [229]
16 / [406]
14 / [356]
|
SSD
Inches / [mm]
7 / [178]
4 / [104]
10 / [245]
8 / [203]
14 / [356]
12 / [305] |
FFD =
Focal to Film Distance
"Overall Length"
dimensions are to the nearest 1/8".
|