Spherometer Assembly: Triangular Frame, 3 Outer Legs, Central Screw & Specimen
Central Tip Free
Pitch Scale & Circular Dial Loupe (Enlarged Frontal View)
Coinciding CSD: n = 0
Pitch Scale (P)
0.0 mm
Circ. Read (n×LC)
0.000 mm
Current Height (h)
0.000 mm
Leg Spacing (a)
40.0 mm
Least Count Configuration: $\text{LC} = \frac{\text{Pitch}}{N}$
LC = 0.010 mm (0.001 cm)
Screw Pitch:
Circular Divisions ($N$):
Support Surface / Spherical Mirror
Convex Surface A ($R \approx 20\text{ cm}$)
Central Screw Displacement ($z$)
0.000 mm
Observation Table (Sagitta $h$)
| # | Surface | PSR (mm) | CSD ($n$) | Reading ($z$) | Plane ($z_0$) | Sagitta $h$ |
|---|---|---|---|---|---|---|
| No observations recorded yet. Adjust central screw and log points. | ||||||
Radius of Curvature Formula:
R = a² / (6h) + h / 2
Evaluated Radius: -- cm