|
|
Measuring Tools and Gauges |
|
Used in Horology |
|
|
|
|
|
Mechanical comparator known also as a dial indicator here permanently mounted on a small stand with specially formed jaws for use by watchmakers on very small components. 60 mm dia. Resolution of 0.01 mm (0.0004") and with a direct range of measurement from 0 to 10 mm (0 to 0.4") |
|
| Standard
mechanical comparator mounted in holder for measuring thickness of sheet
metal or small parts in watch or clock making. 60 mm dia.
Resolution of 0.01 mm (0.0004") and with a direct range of measurement from 0 to 10 mm (0 to 0.4") |
 |
|
|
|
| High
precision Mechanical comparator for use in stand with gauge blocks stack
as the reference to the actual measurement. 60 mm dia.
Resolution of 0.001 mm (0.00004") and with a direct range of measurement from 0 to 1.000 mm (0 to 0.03937") |
|
|
Small size high precision dial indicator for general use, dove tailed on three sides to enable a very easy mounting. Small enough to be mounted in T-rest of a WW style lathe. 36 mm diameter and 60 mm overall length. Resolution of 0.002 mm (0.00008") and with a direct range of measurement
from 0 to ± 0.1 mm (0" to ± 0.004") |
|
| Mechanical comparator
stand of fairly heavy CI construction for use with gauge blocks stack
as the reference to the actual measurement. Range of measurement from 0 to
10 mm directly and 0-110mm with help of gauge block stack.
Typical measurement calibration shown with a 10 mm gauge block and a standard mechanical comparator with a dial of 60 mm diameter and resolution of 0.01 mm (.0004") To view a detailed image move cursor on top of this image and wait for detailed image to appear. |
|
| A very
comprehensive set of high precision gauge blocks that is traceable to the
National Standards Office that is in turn directly referenced to European
Standards Institute.
Resolution of 0.005mm (0.0002") and stable over a very wide temperature range. Blocks cover range from 0.5 to 100 mm incrementing by 0.01 mm from 1 to 1.5 mm by 0.1 mm from 1.5 to 2 mm by 0.5 mm from 2 to 10 mm and by 10 mm from 10 to 100 mm |
|
| Universal
Dial Test Indicator with resolution of 0.001" (0.025mm) and
measuring range of 0.2" (5mm)
This type of UDTI has been recommended by several Clocksmiths NOT to be used in clock making for the reason of inaccuracy.
|
|
|
Images of Starrett UDTI by courtesy of Tom Faragher |
|
| Micrometer for taking direct measurements in lathe with resolution of 0.01 mm, and range of 12 mm (0.5"), unfortunately not small enough for use in WW style lathe. |
|
| Standard watchmakers desktop micrometer with adjustable anvil and resolution of 0.01 mm and range of 0 to 25 mm. |
|
| A very high precision Swiss micrometer with resolution of 0.001 mm (0.00004") and range of 0 to 25 mm (0 to 1"). Often used in stand to allow precise measuring. |
 |
| A general purpose protractor resolving 2' of arc and a range of measurement from 0° to 180° of arc with attachment to allow a range from 0° to 90° of arc. |
 |
| A special
purpose protractor for checking the rake and clearance angles of lathe
cutting tools, resolving 1º of arc and a range of measurement from 0° to
25° of arc rake angle - Gamma and 0° to 30° for clearance angle -
Alpha
With attachments to allow easier access. |
 |
| Classic
watchmaker's measuring tool called "Douzième" Gauge or to
be more precise the "Dixième" as this one is Metric.
The tool measures with a resolution of 0.1 mm (0.004") and a range from 0 to 12 mm (0 to 0.5") |
 |
|
Pivot gauge for checking size of a watch balance staff's pivots usually supplied with a Jacot Lathe 0.01 mm (0.0004") resolution and range from 0 to 0.50 mm (0 to 0.020") |
|
|
|
|
|
Jewel Hole Plug Gauges for checking size of jewel holes, calibrated to very tight tolerance. The test is simple go/no go. Allows testing the size of a jewel hole from the balance staff through to wheel train. Plug gauges range in size from 0.07 to 0.50 mm (0.003" to 0.020"), the step size is 0.01 mm (0.0004") Also available in step size of 0.002 mm (0.00008") |
|
|
Jewelled Pivot Gauge for checking the pivot size and roundness, sized from balance staff pivots to wheel train pivots. The use is simple, pivot is fit tested to the jewels until one is reached that will accommodate it. The Jewel that fits the pivot being the correct size, just like with conventional ring gauges. Jewel holes are in the range from 0.07 to 0.50 mm (0.003" to 0.020"), the step size is 0.01 mm (0.0004"). Also available in step size of 0.005 mm (0.0002") |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
