Tasco 1575 - Manual (Page 130)

SMALL PORRO ABBE PRISMS
This is a type of porro prism system called the Abbe
system, often referred to as a double right angle
prism. It consists of a single prism which is 3 prisms in
one. Two of them make an erecting system. Great to
experiment with. 16mm long by 8mm wide.
L3417 $2.50 or 10 for $19.50
AMICI ROOF PRISMS, 40MM LONG
Amici prisms invert the image and bend the line of
sight thru a 90 degree angle. They are excellent as
prism diagonals in optical systems because they erect
the inverted image. Can be used with your telescope as
a diagonal that keeps correct left/right orientation.
Face is 22mm long. Prism is 40mm long by 22mm wide.
Edmund's smaller one sells for $108.30!!
L3433 $10.50
WEDGE PRISM 68MM X 36MM X 24MM
Longest sides are 68mm and 64mm by 36mm wide.
Shortest side is 24mm. Like new. The two longest
sides are polished with a 20 degree angle. Unused.
L3442 $8.00
QUALITY AMICI ROOF PRISM, 35MM LONG
Amici prisms invert the image and bend the line of sight
thru a 90 degree angle. They are excellent as prism diag-
onals in optical systems because they erect the inverted
image. Can be used with your telescope as a diagonal that
keeps correct left/right orientation. Face is 18mm X
20mm long. Prism is 35mm long by 18mm wide. We got an
incredible buy on these and our price reflects it. Unused.
L3565 $7.50 or 10 for $60.00
UNUSUAL ROTATING OR INTERMITTENT PRISMS
Our understanding is that these were used in high qual-
ity moving picture projectors. They take the place of a
shutter so that a flickerless picture may be projected.
8 sides, each is 12mm long by 5mm wide. Prism is
15mm diameter by 12mm long.
L3997 $12.00
Page 128 - Prisms To Order, call toll free: 1-877-7SURPLUS