Large compasses with chalk-holder, 5s.
*Slip, two set squares and T square, 5s.
*Parkes’ case of instruments, containing 6-inch compasses with pen and pencil leg, 5s.
*Prize instrument case, with 6-inch compasses, pen and pencil leg, 2 small compasses, pen and scale, 18s.
6-inch compasses with shifting pen and point, 4s. 6d.
Small compass in case, 1s.
* Models, &c., entered as sets, cannot be supplied singly.
LARGE DIAGRAMS.
ASTRONOMICAL: