A length selectable spirit level and measurement device for simultaneous measurement and leveling includes a first bar and a second bar. The first bar has a channel positioned therethrough, which extends between opposed ends thereof. A pair of slats positioned in the channel is slidably engaged to the first bar and thus selectively extensible therefrom. Respective indicia of a plurality of indicia coupled to the slats are alignable with a pair of points to measures a distance between the points. The second bar has a set of orifices positioned therethrough, each of which has a spirit bubble tube positioned therein and coupled to the second bar. The spirit bubble tube indicates an orientation of a longitudinal axis of the second bar relative to horizontal. The first bar is selectively engageable to the second bar so that the slats are selectively extensible in parallel with the longitudinal axis.

An adjustable T-square device and method of use is shown and described herein. The adjustable T-square has a plurality of apertures with at least one locking detent to set precise angles. The adjustable T-square has a locking pin to further engage a ruler portion to a head portion to minimize error when using the device.

Disclosed are embodiments describing finger calipers with a pair of lever arms pivotally attached to a hand plate via a pivot point at their respective proximal ends. Each of the lever arms extend along the length of a finger and attach to the end of the respective finger via a finger cuff or some other attachment means. Accordingly, the lever arms can open and close, or otherwise splay apart, in a scissor like manner when the fingers that they are attached to open and close or otherwise splay apart. A ratchet system comprised by one of the lever arms and the hand plate allow for one-way motion of the ratcheted lever arm. The other lever arm freely pivots across the hand plate. When a medical examiner is using the finger calipers, they can reliably measure a dilated cervix by reading a corresponding dilation measurement indicium associated with the ratcheted lever arm.

An adjustable square has a blade including a scale, a body, a slot formed in the body for movably receiving the blade, a locking mechanism operably engaged with the body for releasably securing the blade within the slot, and an indexing member operably engaged with the body and operably engaged with the blade. The indexing member indexes the body at precise locations along the blade. A method for indexing an adjustable square is also provided. The method includes positioning a body of the adjustable square at a precise known position and indexing, with an indexing member of the adjustable square, the body of the adjustable square at the precise known position.

A suspension assembly for a cycle includes a link and an indicator having a central opening. The indicator includes a first retention feature. A pivot assembly is disposed in the link. The pivot assembly includes a second retention feature. The first retention feature and the second retention feature cooperate to axially retain the indicator on the pivot assembly while allowing rotational movement between the indicator and the pivot assembly when a force threshold is exceeded.

A precision decimal inch tape measure has a housing that holds a retractable measurement tape. The retractable measurement tape has a hook on an end. The retractable measurement tape has an upper measurement scale defined along an upper portion of the retractable measurement tape and a lower measurement scale defined along a lower portion of the retractable measurement tape. Both the upper measurement scale and the lower measurement scale indicate inches divided into decimal divisions. The upper measurement scale includes a cumulative foot indicia and the lower measurement scale includes a cumulative inch indicia. The cumulative foot indicia is indicated in red and the cumulative inch indicia is indicated in black. The precision decimal inch tape measure is designed to work with drawings produced in decimal inches as is the preferred standard of CAD drawings. This instant invention works with cumulative feet and inches or with cumulative inches.

Provided is a rail head abrader including a base, a blade, a vertical measurement section and a horizontal measurement section; an upper end surface of the base is arranged horizontally and a base bevel edge intersects a base vertical edge; the blade is disposed on the base and perpendicular to the upper end surface of the base, an upper portion of the blade is provided with vertical wear rail type selection lines; the vertical measurement section includes a vertical scale frame, a vertical digital display device, and a vertical scale cursor; the horizontal measurement section includes a horizontal scale frame, a horizontal measuring rod, measuring rod rail type selection lines, a horizontal digital display device, and a horizontal scale frame cursor, and a horizontal scale frame cursor locating line corresponding to the side wear rail type selection lines; the horizontal measuring rod is slidably mounted on the horizontal scale frame.

Scaling rulers for generating and displaying custom scaled units in accordance with embodiments of the invention are disclosed. In one embodiment, a scaling ruler is provided, comprising: a pointer configured to move along the scaling ruler, a ruler display configured to display scaled units, a control module comprising a processor operatively connected to the pointer and the ruler display, and memory storing a program comprising instructions that, when executed by the processor, cause the scaling ruler to: receive a pointer input from a user, receive a measurement input from the user, calculate a scaling factor based on the pointer input and the measurement input, and generate scaled units based on the scaling factor and display the scaled units on the ruler display.

A suspension assembly for a cycle includes a link and an indicator having a central opening. The indicator includes a first retention feature. A pivot assembly is disposed in the link. The pivot assembly includes a second retention feature. The first retention feature and the second retention feature cooperate to axially retain the indicator on the pivot assembly while allowing rotational movement between the indicator and the pivot assembly when a force threshold is exceeded.

When an index table is installed on a rotary table in a surface shape measuring device, deterioration in measurement accuracy can be suppressed. The surface shape measuring device includes: a rotary table which is configured to place a workpiece thereon and to be freely rotatable around a rotation center axis; and a detector configured to detect a displacement of a probe brought into contact with the workpiece. The rotary table has a centering mechanism configured to align a center axis of the workpiece and the rotation center axis. An index table freely detachably mounted on the rotary table is provided, the index table configured so as to be able to perform indexing along a first axis and a second axis which are perpendicular to the rotation center axis. Eccentric load cancelling means configured to cancel an eccentric load caused by the indexing of the index table is provided.