An impact indicator includes a first member having a reservoir for holding an indicator fluid; a second member couplable to the first member; and a third member disposed between an opening of the reservoir and the second member. Responsive to receiving a predetermined level of impact, at least a portion of the indicator fluid exits the reservoir, and wherein the third member causes the portion of the indicator fluid to be distributed across a surface of the first member adjacent the opening and facing the third member, the portion of the indicator fluid located on the surface of the first member providing a visual indication of the received predetermined level of impact.

A corner flow accelerometer device for reduced gravity applications comprises a capillary tube, wherein the capillary tube is partially filled with a capillary fluid, and wherein the capillary tube includes at least one corner configured to enhance capillary flow. A corner flow accelerometer device for reduced gravity applications comprises a hollow square prism comprising a capillary tube, wherein the square prism is partially filled with a capillary fluid comprising silicone oil, and wherein the square prism is anchored to a weight inside a gyroscope body. A gravity monitoring method comprises providing the corner flow accelerometer device as describe above, measuring a fluid height or meniscus curvature due to capillary flow, calculating a dimensionless Bond number based on the measured fluid height or meniscus curvature, wherein the dimensionless Bond number comprises a ratio between gravitational and surface forces, and calculating a gravitational force based the Bond number.